THE UNIVERSITY OF ILLINOIS

LIBRARY

From the collection of

Julius Doerner, Chicago Purchased, 1918.

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lAILllOAD ENGINEERS

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FIE LD-BOOK

FOtt

RAILROAD ENGINEERS.

CO.\TAI.MN(J

F 0 R M U L /E

IfOIi LAYING OUT CURVES, DETERMINING FROG ANGLES, LEVELLING, CALCULATING EARTH-WORK, ETC., ETC.,

TOGETUER WITH

TABLES

OF )L\»II, ORUINATE.S, DEFLECTIONS, LONG CHORDS, MAGNETIC VAEIA

TION, LOGAKlTII.Mis, LOGARITHMIC AND NATURAL SINES,

TANGENTS, ETC., ETC.

BY

JOHN B. HENCK, A.M.,

CIVIL ENGINEER.

NEW YORK:

D. APPLETON & COMPANY, 549 & 551 BROADWAY.

LONDON: IG LITTLE BKITAIN

1877.

EsTEiiF-D, according to Act of Congress, in the year 1854,

By D. APPLETON & CO.,

In the Clerk's Office of the District Court of the United States for the Southern District of Xow York.

6>Z o . /

/81^

PREFACE.

The object of the present work is to supply a want very i^enerally felt by Assistant Engineers on Railroads. Books of convenient form for use in the field, containing the ordi nary logarithmic tables, are common enough ; but a book combining with these tables others peculiar to railroad work, and especially the necessary formulse for laying out curves, turnouts, crossings, &c., is yet a desideratum. These formuke, after long disuse perhaps, the engineer is often called upon to apply at a moment's notice in the field, and he is, therefore, obliged to carry with him. in manuscript such methods as he has been able to mvent or collect, or resort to what has received the very appropriate name of " fudging." This the intelligent engineer always considers a reproach; and he will, therefore, it is hoped, receive with favor any attempt to make a resort to it inex- cusable.

Besides supplying the want just alluded to, it was thought that some improvements upon former methods might be made, and some entirely new methods introduced. Among the processes believed to be original may be specified those in §§41 48, on Compound Curves, m Chapter II., on Parabolic Curves, in §§ 106 - 109, on Vertical Curves, and in the article on Excavation and Embankment. It is

4694 4?

V] PREFACE.

but just to add, that a great part of what is said on Reversed Curves, Turnouts, and Crossings, and most of the Miscel- laneous Problems, are the result of original investigations. In the remaining portions, also, many simplifications have been made. In all parts the object has been to reduce the operation necessary in the field to a single process, inil;- cated by a formula standing on a line by itself, and distin- guished by a ly . This could not be done in all cases, as will be readily seen on examination. Certain preliminary steps were sometimes necessary, and these, whenever it was practicable, have been indicated by words in italics.

Of the methods given for Compound Curves, that in § 46 will be found particularly useful, from the great variety of applications of which it is susceptible.

Methods of laying out Parabolic Cui-ves are here given, that those so disposed may test their reputed advantages. Two things are certainly in their favor ; they are adapted to unequal as well as equal tangents, and their cuiTature generally decreases tov/ards both extremities, thus making the transition to and from a straio-ht line easier. Some labor has been given to devising convenient ways of laying out these curves. The method of determinins; the radius of curvature at certain points is believed to be entirely WQW. Better processes, however, may already exist, par- ticularly in France, where these curves are said to be in general use.

The mode of calculating Excavation and Embankment here presented, will, it is thought, be found at least as sim- ple and expeditious as those commonly used, with the ad- vantage over most of them in point of accuracy. The usual Tables of Excavation and Embankment have been omitted. To include all the varieties of slope, width of road-b^d, and depth of cuttmg, they must be of great extent, and uiitiued

H

PREFACE. ri:,

tor a field-book. Even then they apply only to ground whose cross-section is level, though often used in a mannei shown to be erroneous in § 128. When the cross-section of the ground is level, the place of the tables is supplied by the formula of § 119, and when several sections are calcu- lated together, as is usually the case, and the work is ar- ranged in tabular form, as in § 120, the calculation is be- lieved to be at least as short as by the most extended tables. The correction in excavation on curves 129) is not known to have been introduced elsewhere.

In a work of this kind, brevity is an essential feature. The form of "Problem" and "Solution" has, therefore, been adopted, as presenting most concisely the thing to be done and the manner of doing it. Every solution, how- ever, carries with it a demonstration, which is deemed an equally essential feature. These demonstrations, with a few unavoidable exceptions, principally in Chapter II., pre- suppose a knowledge of nothing beyond Algebra, Geome- try, and Trigonometry. The result is in general expressed by an algebraic formula, and not in words. Those familiar with algebraic symbols need not Jje told how much more uitelligible and quickly apprehended a process becomes when thus expressed. Those not familiar with these sym- bols should lose no time in acquiring the ready use of a language so direct and expressive. It may be remarked that it was no part of the author's design to furnish a col- lection of mere " rules," professing to require only an abil- ity to read for their successful application. Rules can sel- iom be safely applied without a thorough understanding of llie principles on which they rest, and such an understand- ing, in the present case, implies a knowledge of algebraic (ormulse.

The tables here presented will, it is hoped, prove relia

VUl PREFACE.

ble. Those specially prepared for this work have been computed with great care. The values have in some cases been carried out farther than ordinary practice requires, in order that interpolated values may be obtained from them more accurately. For the greater part of the material composing the Table of Magnetic Variation the author is indebted to Professor Bache, whose distinguished ability ir conducting the operations of the Coast Survey is equalled only by iiis desire to diffuse its results. The remaining tables have been carefully examined by comparing them with others of approved reputation for accuracy. Many errors have in this way been detected in some of the tables of corresponding extent in general use, particularly in the Table of Squares, Cubes, &c., and the Tables of Logarith- mic and Natural Sines, Cosines, &c. The number of tables might have been greatly increased, but for an unwillingness to insert any thing not falling strictly within the plan of th? work or not resting on sufficient authority.

J. B. 11.

Boston, February, 1854.

TABLE OF CONTENTS.

CHAPTER I.

CIRCULAR CURVES.

Article I. Simple Curves.

2. Definitions. Propositions relating to the circle . . 1

4. Angle of intersection and radius given, to find the tangent 3

5. Angle of intersection and tangent given, to find the radius 3

6. Degree of a curve 4

7. Deflection angle of a curve

A. Method by Deflection Angles.

9. Radius given, to find the deflection angle .... 4

10. Deflection angle given, to find the radius . . , 4

11. Angle of intersection and tangent given, to find the deflection

angle . 5

12. Angle of intersection and deflection angle given, to find the

tangent

13 Angle of intersection and deflection angle given, to find the

length of the curve 6

U. Deflection angle given, to lay out a curve .... 7

.16. To find a tangent at any station 8

B. Method 1)1/ Tangent and Chord Dejlections.

17. Definitions ... .... .8

18. Radius given, to find the tangent deflection and chord deflection 9

19. Deflection angle given, to find the chord deflection . . 9

21. To find a tangent at any station 9

22. Chord deflection given, to lay out a curve . . . . 10

S TABLE OF CONTENTS.

C. Ordinatcs.

24. Definition H

25. Deflection angle or radius given, to find ordinatcs . 11

26. Approximate value for middle ordinate . . . l-^

27. Method of finding intermediate points on a curve approxi-

mately . . . . 14

D. Cui~ving Rails.

29. Deflection angle or radius given, to find the ordinate for curv-

ing rails . ^'^

Article II. Reveesed and Compound Ccrtes,

30. Definitions .15

31. Radii or deflection angles given, to lav out a reversed or com-

pound curve ^^

A. Reversed Curves.

32. Reversing point when the tangents are parallel . . 16

33. To find the common radius when the tangents are parallel 1 6

34. One radius given, to find the other when the tangents are par-

allel .... "

35. Chords given, to find the radii when the tangents are parallel 18

36. Radii given, to find the chords when the tangents are parallel 18

37. Common radius given, to run the curve when the tangents are

not parallel ^^

38. One radius given, to find the other when the tangents are not

parallel *^

39. To find the common radius when the tangents are not parallel 21

40. Second method of finding the common radius when the tan-

gents are not parallel 22

B. Compound Curves.

41. Common tangent point .... .23

42. To find a limit in one direction of each radius . . 24

44. One radius given, to find the other 25

45. Second method of finding one radius when the other is given 26

46. To find the two radii 2V

47. To find the tangents of the two branches .... 29 48 Second method of finding the tangents of the two branches . 30

TABLE OF CONTENTS. B

Article III. Turxouts and Crossings.

HECT. PAQl

i9. Dcliiiitions '^1

A. Turnout from Straight Lines.

50. Radius given, to find the frog angle and the position of the frog 32

51. Frog angle given, to find the radius and the position of the frog 33

52. To find mechanically the proper position of a given frog . 34

53. Turnouts that reverse and become parallel to the main track 34

54. To find the second radius of a turnout reversing opposite the

frog ....... ... 35

B, Crossings on Straight Lines.

55. Kcferences to proper problems 36

56. Radii given, to find the distance between switches . 36

C. Turnout from Curves.

57. Frog angle given, to find the radius and the position of the frog 38

58 To find mechanically the proper position of a given frog . 41

59 Proper angle for frogs that they may come at the end of a rail 41

60 Radius given, to find the frog angle and the position of the frog 42 62 Turnout to reverse and become parallel to the main track. . 44

D. Crossings on Curves.

63. References to proper problems ^^

64. Common radius given, to find the central angles and chords 45

Article IV. Miscellaneous Problems.

65. To find the radius of a curve to pass through a given point 46

66. To find the tangent point of a curve to pass through a given

point 47

67. To find the distance to the curve from any point on the tan-

gent 47

68 Second method for passing a curve through a given point . 47

69. To find the proper chord for any angle of deflection . . 4*

70. To find the radius when the distance from the intersection

point to the curve is given 48

71 To find the distance from the intersection point to the curve

when the radius is given ... ... 49

Xll TABLE OF CONTENTS.

SECT. PAai

72. To finil the ta\igent point of a curve that shall pass through a

given point .... . 5C

73. To find the radius of a curve without measuring: angles . 51

74. To find the tangent points of a curve without measuring an-

gles . , . ... 5?

75. To find the angle of intersection and the tangent points when

the point of intersection is inaccessible .... 52

76. To lay out a curve when obstructions occur . . 5.t

77. To change the tangent point of a curve, so that it may pass

through a given pomt 50

78. To change the radius of a curve, so that it may terminate in

a tangent parallel to its present tangent . . . .57

79. To find the radius of a curve on a track alreadv laid . . 5;^

80. To draw a tangent to a given curve from a given point . . 59

81. To flatten the extremities of a sharp curve .... .tj

82. To locate a curve without setting the instrument at the tan-

gent point . . . .... 60

'*.'?. To measure the distance across a river . 6.H

CHAPTER II.

PARABOLIC CURVES.

Article I. Locating Parabolic Clkvls.

84. Fropo.>itions relating to the parabola ... .65

85. To lay out a parabola by tangent deflections ... 66 36. To lay out a parabola by middle ordinates . . . .67 87. To draw a tangent to a parabola 67

89. To lay out a parabola by bisecting tangents - . .68

90. To Iny out a parabola by intersections ... 69

Ai;tict.e II. Radius of Curvature.

9^. Definition .... ... .71

9-3. To find the radius of curvature at certain stations . . .71

95. Simplification when the tangents are equal . . .

TABLE OF CONTENTS. XIH

CHAPTER III. LEVELLING.

AnriCLE I. Heights and Slope Stakes.

»»JT. PAGE

96. Definitions 78

97. To find the diflovence of level of two points . . . .78

98 Datum plane 79

99. To find tlic heights of the stations on a line . . . . 8C

100. Sights denominated jo/ms and m««Ms 81

101. Form of field notes 82

102. To set slope stakes 82

AuTiCLE II. Correction for the Earth's Curvature and

FOR Refraction.

103. Earth's curvature 84

104. Refraction 84

105. To find tlie correction for curvature and refraction . . 85

Article III. Vertical Curves.

106. Manner of designating grades . 86

107. To find the grades for a vertical curve at whole stations 86

109. To find tlie grades for a vertical curve at sub-stations . 88

Article [V. Elevation of the Outer Rail on Curves.

110. To find the proper elevation of the outer rail 89 .11. Coning of the wheels 89

CHAPTER IV.

EARTII-WORK, Article I. Prismoidal For.mula.

.12 Definition of a prismoid 92

[13. To find the solidity of a piismoid 92

Article II -Borroav-Pits. 114. Manner of dividing the ground 93

XIV T..i5LE OF CONTENTS.

SECT. PAOa

115. To find the solidity of a vertical prism whose horizontal sec-

tion is a triangle 93

116. To find the solidity of a vertical prism whose horizontal sec-

tion is a parallelogram 94

117. To find the solidity of a number of adjacent prisms having

the same horizontal section f '^

\rticle III. Excavation and Embankment. A. Centre Heights alone given.

119. To find the solidity of one section 97

120. To find the solidity of any number of successive sections . 98

B. Centre and Side Heights given.

121. Mode of dividing the ground 9^

122. To find the solidity of one section lUO

123. To find the solidity of any number of successive sections . 104

125. To find the solidity when the section is partly in excavation

and partly in embankment .... . . 105

126. Beginning and end of an excavation ... . 107

C. Ground very Irregular.

127. To find the solidity when the ground is very irregular . 108

128. Usual modes of calculating excavation 109

D. Correction in Excavation on Curves.

129. Nature of the correction 110

130. To find the correction in excavation on curves . . . 112 132. To find the correction when the section is partly in excava

tion and partly in embankment -113

TABLES.

RO. PAOB

I. Radii, Ordinates, Tangent and Chord Deflections, and Or-

dinates for Curving Rails 115

U. Long Chords 119

TABLE OP CONTENTS. X^

NO. PAGE

HI. (correction for the Earth's Curvature and for Rcfract'uin . 120

IV. Elevation of the Outer Rail on Curves . . . . I'iO

V. Frog Angles, Chords, and Ordinates for Turnouts . .121

VI. Length of Circular Arcs in Parts of Radius . . . 121

VJI. Expansion by Heat 122

VIII. Properties of Materials 123

IX. Magnetic Variation 126

X. Trigonometrical and Miscellaneous Ft (-mulie . . 13'i

XI Squares, Cubes, Square Roots, Cube Roots, and Recip- rocals ....... . . 137

XII. Log Arithms of Numbers . . .... 155

XIII. Logarithmic Sines, Cosinee Tangents, and Cotangents 171

XIV. Natural Sines and Cosines 219

XV. Natural Tangents and Cotangents . . . 229

XVL Rise per Mile of Various Grades .... MJ

EXPLANATION OF SIGNS.

The sign + indicates that the quantities between which it is placed ire to be added together.

The sign indicates that the quantity before which it is placed .s to be subtracted.

The sign X indicates tliat the juantities between which it is placed are to be midtiplied together.

The sign -r- or : indicates that the fust of two quantities between which it is placed is to be divided by the second.

The sign indicates that the quantities between which it is placed are equal.

The sign oo indicates that the difference of the two quantities be- tween which it is placed is to be taken

The sign .• . stands for the word "hence " or " therefore."

The ratio of one quantity to another may be regarded as the quo- tient of the first divided by the second. Hence, the ratio of a to 6 is expressed by a : h, and the ratio of c to d by c : (/. A proportion ex presses tlie equal it 1/ of two latios. Hence, . proportion is rcjiresented by placing the sign between two ratios ; as, a b = c : d

In the text and in the tables the foot has been taken as the unit gi measure when no other unit is specified.

FIELD-BOOK.

CH/VPTER I.

CIRCULAR CURVES.

Article I. Simple Cuka'es

1. The railroad curves here considered are eitlier Circular or Para holic. Circular curves are divided into Simple, Reversed, and Com j)Ound Curves. We begin with Simple Curves.

2. Let the arc ADEFB (fig. 1) represent a railroad ciu've, unit

Fig. \.

2 CIRCULAR CURVES.

ing the straight lines GA and B FT. The lengtli of sudi a curve is measured by cliords, each 100 feet long.* Tlius, if the chords AD^ DE, E F, and FB are each 100 feet in length, the whole curve is said to be 400 feet long. The straight lines GA and BH are always tangent to the curve at its extremities, which are called tangent points. U GA and BH are produced, until they meet in C, ^ C and B C are called the tangents of the curve. If ^ C is produced a little beyond Cto /v, the angle KGB, formed by one tangent with the other pro- duced, is called the angle of intersection, and shows the change of direc- tion in passing from one tangent to the other.

The following propositions relating to the circle are derived from Geometry.

I. A tangent to a circle is perpendicular to the radius drawn through the tangent point. Thus, A C is perpendicular to A 0, and B C to BO.

II. Two tangents drawn to a circle from any point are equal, and it a chord be drawn between the two tangent points, the angles between this chord and the tangents are equal. Thus AC— B C, and the angle B A C =^ A B C.

III. An acute angle between a tangent and a chord is equal to half the central angle subtended by the same chord. Thus, C A B hAOB.

IV. An acute angle subtended by a chord, and having its vertex in the circumference of a circle, is equal to half the central angle sub- tended by the same chord. Thus, D AE = i D OE.

V. Equal chords subtend equal angles at the centre of a circle, and also at the circumference, if the angles are inscribed in similar seg- ments. Thus, AOD = DOE, and D A E = E A F.

VI. The angle of intersection of two tangents is equal to the cen- tral angle subtended by the chord which unites the tangent points. Thus, KGB = AO b'

3. In order to unite two straight lines, as GA and B H, by a curve, the angle of intersection is measured, and then a radius for the curve may be assumed, and the tangents calculated, or the tangents may be assumed of a certain length, and the radius calculated.

* Some engineers prefer a chain 50 feet in length, and measui'e the length cf :i enrve by chords of 50 instead of 100 feet. The chord of 100 feet has been adopteii throughout this article ; but the formulae deduced may be very readily modified t(. Buit chords of any length. See also ^ 13.

SIMPLE CURVES.

ti

4. Pro'bleni. Given the angle of intersection K C B 1 fjig \) and the radius A 0 = R, tojind the tangent A C = T.

1-iy I.

Solution. ])niw CO. Then in the right triangle AOC we lia«'',

iTab. X. 3) 4-;- = tan. AO C, or, since A 0 0=^1 a 2, VI.) A O

- = tan. 2 /;

T = R tan. ^ /.

Example. Given 7 = 22== .52', and /? = 3000, to find T. Here

A' = 3000 3.477121

^7=11° 26' tan. 9.305865

T= 606 72

2.7829»0

.5. Problem. Given the angle of intersection KCB = I {fg. I ), ind the tangent A C '1\ to find thp radius A 0 =-. R.

4 CIRCULAR CURVES.

Solution. In tlie right triangle A 0 C we have (Tab. X. 61

= cot. A O C. ov = cot. h i ; AC ' r ^ '

!^= ,'. R== Tcot. i/.

Example. Given 7 = 31° 16' and r= 950, to find 72. Here

r=950 2.977724

^1= 15° 38 cot. 0.553102

R = 3394.89 3.530826

6. The decree of a curve is determined by the angle subtended at its centre by a chord of 100 feet. Thus, if A 0 D = (fig. 1), ADEFB is a curve.

7. Tlie deflection angle of a curve is the acute angle formed at any point between a tangent and a chord of 100 feet. The deflection angle is, therefore (^ 2, III ), half the degree of the curve. Thus, CAD or CBF is the deflection angle of the curve A D E F B, and is half A OD or half F 0 B.

A. Method by Deflection Angles.

8. The usual method of laying out a curve on the ground is by means of deflection angles.

9. Problem. Given the radius A 0 == R {fig. \), to find the de- flection angle C B F = D.

Solution. Draw OL perpendicular to B F. Then the angle BOL = hBOF= D, and BL = hBF=50. But in the right triangle

OBL yve have (Tab. X. 1 ) sin. BOL = ^; IW sin. Z) = .

J. L

Example. Given R = 5729.65, to find D. Here

50 1.698970

72 = 5729.65 3.758128

D = 30' sin. 7.940842 .

Hence a curve of this radius is a curve, and its deflection angle is 30'.

10. Problem. Given the deflection angle C B F = D (fig. 1), «»

find the radius A 0 ^= R.

METHOD BY DEFLECTION ANGLES. 5

Solution. By the preceding section we have sin. Z)= , whence

R

fi sin. D=^ 50;

50

'. A' =

sin. D By this formula the radii in Tahle I. are calculated.

Erampk. Given D = 1", to find R. Here

50 1.698970

■^=1'' sin. 8 241S.')5

i^= 2864.93 3.457115

1 1 . Problem. Given the angle of intersection KCB = I (Jig. 1 ), and the tangent AC = T, to find the deflection angle CA D = D.

Solution. From § 9 we have sin. D = —, and from ^ 5, R =

7' cot. .^7. Substituting this value of 72 iv the first equation, we get

sm. D = ;

rcot. i /'

r5s« T-. 50 tan. i / ts^ . . sm. D = L_ .

Example. Given 7 = 21° and T = 424.8, to find D. Here

50 1.698970

^7=10° 30 tan. 9.267967

0.9669S7 7' =424 8 2.628185

7) = 15' sin. 8.338752

12. Problem. Given the angle of intersection KCB ^ I {fig. \) and the deflection angle CAD = D, to find the tangent AC= T.

Solution. From the preceding section we have sin. D = - ^°' ^-\

T Hence, Tsin. 7) = 50 tan. i 7;

j^=» . rp 50 tan. «i 7

sin. D

Example. Given 7 = 28° and D = 1°, to find T. Here

50 tan. 14°

T= -~r~Tr- = 714.31. Bin l""

b CIRCULAR CURVES.

13. Problem. Given the angle of intersei tion K CB = I {Juf. 1), and the deflection angle C A D = D, to find the length of the curve.

Solution. By § 2 the length of a curve is measured by chords of 100 feet applied around the curve. Now the first chord A D makes with the tangent A C oxi angle C A D =^ D, and each succeeding chord DE,EF,&c. subtends at u4 an additional angle DAE, EAF, &c. each equal to D; since each of these angles 2, IV.) is half of a central angle subtended by a chord of 100 feet. The angle CAB = i A 0 B = ^ I is, therefore, made up of as many times Z), as there are chords around the curve. Then if n represents the number of chords, we have n D = ^ I',

hi

,• . n = - .

D

If D is not contained an even number of times in ^ /, the quotient above will still give the length of the curve. Thus, in fig. 2, suppose D is contained 4| times in ^ /. This shows that there will be four whole chords and | of a chord around the curve from A to B. The angle GAB, the fraction of D, is called a sub deflection angle, and G B. the fraction of a choi'd, is called a sub-chord*

The length of the curve thus found is not the actual length of tlie arc, but the length required in locating a curve. If the actual length of the arc is required, it may be found by means of Table VI.

Example. Given / = 16° 52' and D = 20', to find the length of

JL J- g3 9gl 506'

the curve. Here n = '^ = £5^ "=80^"" ^•^-^' ^^^^ ^^' ^"^^® is 6.32.5 feet long.

To find the arc itself in this example, we take from Table VI. the length of an arc of I60 52', since the central angle of the whole curve is equal to /(§ 2, VI ), and multiply this length by the radius of the

curve.

Arc 10° = .1745329

" = .1047198

« 50' = .0145444

« 2' = .0005818

" 16° 52' = .2943789

This method of finding the length of a sub-chord is not mathematically accu- rate ; for, by geometry, angles inscribed in a circle are proportional to the arcs on which they stand ; whereas this method supposes them to be proportional to the chords of these arcs. lu railroad curves, the error arising from this supposition m too small to be regari'ed.

METHOD BY TiiniENT AND CHORD DEFLECTIONS. 9

o»rt% B 11 and C K of tlie same length as the chords. Draw O/i nnd D K. B G is called the tangent deflection, and C H or D K the du>nl deflection.

18. Problem. Given the radius AO = R (flg. S), to flnd the tangent deflection B G, and die chord deflection C H.

Solution. The triangle C B II is similar to BOC; for*thc angle BOC= 180= - {OBC-\- B CO), or, since BCO = ABO, BOC = 180= {0 BC -{- ABO) = CB H, and, as both tiie triangles are isosceles, the remaining angles are equal. The homologous sides are. therefore, proportional, that is, B 0 : B C = B C : C II, or, represent- ing, the chord by c and the chord deflection by d, R : c =^ c : d\

c^

^ .-. d = -.

R

To find the tangent deflection, draw BM to the middle of 6*7/, bisecting the angle C B H, and making i3il/C a right angle. Then the right triangles B M C and AGS are equal ; fovBC=A B, and the angle CBM=hCBII=iBOC=^AOB = BAG (§2, III.). Therefore B G = CM= h OH = ^d, that is, the tangent de- flection is half the chord deflection.

19. Pr61>!eill. Given the deflection angle D of a curve, to flnd the chord deflection d.

Solution. By the precedin;; section we have d^= -77, and by \ 10,

tl = , ^ Substituting this value of R in the first equation, we find

c^ sin. D

^ d =

50

This formula gives the chord deflection for a chord c of any length though D is the deflection angle for a chord of 100 feet (^^ 7). When c = 100, the formula becomes d= 200 sin D, or for the tangent de- flection hd = 100 sin. D. By these formulte the tangent and chord deflections in Table I. may be easily obtained from the table of natural sines

20. The length of the curve may be found by first finding Z) 9 or J U), and then proceeding as in § 13.

21. Probleifla To drcntJ a tangent to the cun^e at any station, HS B {Jig. 3).

Solution. Bisect tne chord deflection II 0 of the next station in M. 2

10 CIRCULAR CURVES.

A line drawn through B and 31 will be the tangent required ; foi it has been proved 18) that the angle C B M is in this case equai to i B 0 0, and B J/ is consequently 2, III.) a tangent at B.

If B is at the end of the curve, the tangent at B may be found with- out first laying off // C. Thus, if a chain equal to the chord is extend- ed to H on A B produced, the point H marked, and the chain ihon swung ronnd, keeping the end at B fixed, until II M = h d, fJ M will he the direction of the re(iuired tangent.*

22. ProtoleilS. Giveii the chord deflection (/, to lay .nil a curcc from a given tangent point.

Solution. Let A (tig. 3) be the given tangent point, and suppose '/ has been calculated for a chord of 100 feet. Stretch a cbain of li'i; feet from A to G on the tangent EA produced, and mark the poini G. Swing the chain round towards AB, keeping the end at A fixed until B G \s equal to the tangent deflection i c/, and B will be the first station on the curve. Stretch the chain from B to H on AB pro duced, and having marked this point, swing the chain round, until U C is etpial to the chord deflection d. Cis the second station on the curve Continue to lay off the chord deflection from the preceding chord pro duced, until the curve is finished.

Should a sub-chord DF occur at the end of the curve, find the tan gent DL at D 21), lay off from it the proper tangent deflection Lf for the given sub-chord, making DF of the given length, and F will be a point on the curve. The proper tangent deflection for the sub- chord may be found thus. Eepresent the sub-chord by c', and the cor-

responding chord deflection by d', and we have 18) 5 c/' = ; but since hd = ' we have ^ c/' : 2 cZ = c'- : c^. Therefore ^d' = ,^d(-]

Example. Given the intersection angle I between two tangents equal to 16° 30', and R = 12.')0, to find T, c/, and the length of the curve in stations. Here

(§4) T=R tan. j^ /= 1250 tan. 15' = 181.24 ;

c'i 100*2

* Tlie distance B M is not exactly equal to the chord, but the error arising from taking it equal is too .small to be regarded in any curves but those of very small radius. If necessary, the true length of B M may be calculated ; for B M =:

ORDINATES. , 11

0 9) sin. L> = -f == -|?- = .04 .= nat. sin. 17^';

, r , ox M 8 ' 15' 495'

(6 13) ;z = = = = 3.60.

^^ ^ n 2J17J' 137.5'

These results show, that the tangent point A (fig. 3) on the first taii gent is 18124 feet from the point of intersection, that tlie tan<.en\ deflection G B=^ld= A feet, that the chord deflection //Cor K D = 8 feet, and that the curve is 360 feet long. The three whole sta- tions B^ C. and D having been found, and the tangent D L drawn, the tangent deflection for the sub-chord of 60 feet will be, as shown above,

h cV = 4 C"- ) = 4 X .62 = 4 X .36 = 1 44. LF= 1.44 feet being

laid off from DL, the point F will, if the work is correct, fall upon the second tangent point. A tangent at F may be found 21) by producing DF to P, making FP= DF= 60 feet, and laying ofl PN = 1.44 feet. FN will be the direction of the required tangent, which should, of course, coincide with the given tangent.

23. CurA^es may be laid out with accuracy by tangent and ch.ord deflections, if an instrument is used in producing the lines. But if an instrument is not at hand, and accuracy is not important, the lines may be produced by the eye alone. The radius of a curve to unite two given straight lines may also be found without an instrument by § 73, or, having assumed a radius, the tangent points may be found by § 74.

C Ordinates.

24. The preceding methods of laying out curves determine points 100 feet distant from each other. These points are usually sufficient for grading a road ; but when the track is laid, it is desirable to have intermediate points on the curve accurately determined. For this pur- pose the chord of 100 feet is divided into a certain number of equal parts, and the perpendicular distances from the points of division to the curve are calculated. These distances are called ordinates. If the chord is divided into eight equal parts, we shall have points on the curve at every 12.5 feet, and this will be often enough, if the rails, which are seldom shorter than 15 feet, have been properly curved 28).

25. Problem. Given the dpflection angle D or the radius R of a came, to Jind the ordinates for any chord.

Solution. I. To find the middle ordinate. Let AEB (fig. 4) be ft portion of a curve, subtended by a chord A B, which may be de-

i'^

CIRCULAR CURVES.

noted by c. Draw the middle ordinate ED, and denote it by m. Pro- duce ED to the centre F, and join A F and A E. Then (Tab. X. 3'«

I Xu

ED

Id

= tan. E A D, or E D

But, since the angle

E AD is measured by half the arc BE, or by half the equal arc AE^ we have EAD=hA FE. Tlierefore E D = AD tan. ^ A FE, ox

^ m^ hciVin-^AFE.

When c = 100, A FE = /) "), and m = 50 tan. 5 /), whence 7/) may be obtained from the tabic of natural tangents, by <liA-iding tan 4 Z) by 2, and removing the decimal point two places to the right.

The value of m may be obtained in another form thus. In the triangle ADF we have DF= ^A F^ A if- = ^72^ _ ^ ^2. Then m = EF— DF= R DF, or

7)1

= R s/R-

4 ^

II. To find any other ordinate, as i?iV, at a distance DN =h from ihe centre of the chord. Produce RN until it meets the diameter

parallel to ^ ^ in G, and join R F. Then RG= ^R F^ F G* = y^-ZTp; andRN= RG XG= RG— DF. Substituting the value o? RG and that of D F found above, we have

RN = ^R^ V' - ^R^ i c2.

ORDmATES. 13

By these fcrmulaj the ordinates in Table I are calculated.

The other ordinates may also be found from the middle ordinate by jie following shorter, but not strictly exact method. It is founded on the supposition, that, if the half-chord B D he divided into any number of equal parts, the ordinates at these points will divide the arc E B into the same number of equal j)arts, and upon the further supposition, that the tangents of small angles are proportional to the angles themselves. These suppositions give rise to no material error in finding the ordi- nates of railroad curves for chords not exceeding 100 feet. Making, for example, four divisions of the chord on each side of the centre, and joining A B, AS, und A T, we have the angle RAN=^EAD, since R B is considered equal to % E B. But EAD= iAFE. Therefore, B. A N= | .1 FE. In the same way we should find SAO -= ^ A FE, and TA P = ^ A FE. We have then for the ordinates, R N=^ AN tan. RAN = ^c tan. | A FE, SO=AO tan. SA 0 = I c tan. i A FE, and TP = AP tan. TAP ^Ic tan. J A FE. But, by the second supposition, tan. %AFE = | tan. ^ AFE, tan. \AFE = ^ tan. i A FE, and tan. ^AFE^\ tan. i A FE. Substituting these values, and recollecting that §■ c tan. ^ A FE = m, rte have

f 72iV= |g X i c tan. I ^ jP^ = jgwi,

SO^\x^ctaxi.^AFE = \ vi,

7 7

TP = jg X i c tan. ^ A FE = ^g m.

In general, if the number of divisions of the chord on each side of the centre is represented by n, we should find for the respective ordi-

. (n + l)(n-l)m (n+2)(7t-2)m nates, begmnmg nearest the centre, :^ , ^^^ ?

;n + 3){n 3)wz

«2

, &C.

Example Find the ordinates of an curve to a chord of 100 feet.

Here wi = 50 tan. = 1.746, TZiV^ ^ w = 1.637, 6' 0 = \m ^ 1..310,

7 and TP = ^ w = 0.764.

26. An approximate value of m also may be obtained from the for- mula m = R ^R^ \ c^ This is done by adding to the quantity

under the radical the very small fraction g, ^j •> making it a perfect

CIRCULAR CURVES.

f quare, the root of which will he R 5-5 . Wc have, then, n. «=> fi

i^-n-J-

8R SB.)

8 R

27. From this value of m we see that the middle ordinates of any two chords in the same curve are to each other nearly as the squares of the chords. If, then, A E (fig. 4) be considered equal to ^ y4 S. its middle ordinate C // == {ED. Intermediate points on a curve m;iy, therefore, be very readily obtained, and generally with sufficient accu- racy, in the following manner. Stretch a cord from A to B, and Ijy means of the middle ordinate determine the point E. Then stretch the cord from A to E, and lay off the middle ordinate C 11 = \ ED, thus determining the point C, and so continue to lay off from the .'^■i;-- ressive half-chords one fourth the preceding ordinate, until a sufficicru number of points is obtained.

D. Curving Rails.

28. The rails of a curve are usually curved before they are V.vkx To do this properly, it is necessary to know the middle ordinate of the curve for a chord of the lenjith of a rail.

29. Problem. Given the radius or deflection angle of a curve., to find the middle ordinate for curving a rail of given length.

Solution. Denote the length of the rail by Z, and we have 25)

the exact formula m = R ^/FC^ 4 ^'> and 26) the approximate formula

m ^

2R

This formula is always near enough for chords of the lengtli of a rail

50 If we substitute for R its value 10) R sin^ ' ^^® have,

100

Example. In a curve find the ordinate for a rail of 18 feet m length. Here R is found by Table I. to be 5729.6.5, and therefore.

KliVERSED AND COMPOUND CURVES.

13

9- by the first foi-mula, m -- 11459.3 = .00707. By the sccorul forniula,

m = .81 sin. 30' = .00707. The exact formula would give the same result even to the fifth decimal.

By keeping in mind, that the ordinate for a rail of 18 feet in a 1=^ curve is .007, the corresponding ordinate in a curve of any other de- gree may be found with suflficient accuracy, by multiplyiug tliis deci- mal by the number expres.sing tlio degree of the curve. Thus, for a curve of 5'^ 36' or 5.6°, the ordinate would be .M7 X •'>-6 = .0."9 ft. =-

468 in.

For a rail of 20 feet we have ^ /^ = 100, and, consequently, ?h =- sin. D. This gives for a curve, m = .0087. The corresponding or- dinate in a curve of any other degree may be found with sufficient accuracy, l^y multiplying this decimal by the number expressing the degree of the curve.

By the above formula for m, the ordinates for curving rails in Table I, are calculated.

Article II. Reversed and Compound Curves.

30. Two curves often succeed each other having a common tangeni at the point of junction. If the curves lie on opposite sides of the com- mon tangent, they form a reversed curve, and their radii may be the !,ame or different. If they lie on the same side of the common tangcTit

tney have different radii, and form a compound curve. Thus A B C 'fiff. .5") is a reversed cirve, and .1 B D % comoound curve.

16

CIRCULAR CURVES.

31, ProbleiJl. To lay out a reversed or a compound cun>e, tufien. the radii or dejiection anyles and the tangent points are known.

Solution. I/ay out the first portion of the curve from A to B Cfig. 5), by one of the usual methods. Find B F, the tangent to A B at the point B 16 or ^ 21). Then B F will be tlie tangent also of the sec- ond portion B C oi a reversed, or Zi D of a compound curve, and from this tangent cither of these portions may be laid ofl' in the usual man ner

A. Reversed Curves.

32 I'SieOJ'CRi. Tlie reversing point of a reversed curve letwces parallel tangents is in the line joining the tangent points.

Fig. 6.

t\

Demonstration. Let A CB (fig. 6) be a reversed curve, uniting tin parallel tangents HA and B K, having its radii equal or unequal, and reversing at C. If now the chords A Cam] CB are drawn, we have to prove that these chords are in the same straight line. The radii E C and C F, being perpendicular to the common tangent at C 2, 1.), are in the same straight line, and the radii A E and B F, being per- pendicular to the parallel tangents HA and B K, are parallel. There- fore, the angle AE C= CFB, and, consequently, E C A, the half supplement of A E C, is equal to F C B, the half supplement of CFB; but these angles cannot be equal, unless A Cand C B are in the same straight line.

33. Proljlem. Given the perpendicular distance between two par- alM tangents B D =^ b {Jig 6), and the distance between the two tangeni voints A B = a, to determine the reversing point C and the common radnti E C ^ C F = R of a reversed curve uniting the tangents HA and B K.

Solution. Let ACB be the required curve. Since the radii are

REVERSED CURVES.

n

equal, and the angle AE C = B F C, the triangles AE C and B FC are equal, and A C = CB ^ ^a. The reversing point C is, therefore, the middle point of A B.

To find R, draw E G perpendicular to A C. Then the right tri- itngles AEG and BAD are similar, since 2, III.) the angle BAD = hAEC^ AEG. Therefore A & -. A G ^. AB : BD, or ii : ^ a = a : 6 ;

46

Corollary. If R and h are given, to find a, the equation 72 = j^ gives a' = 4 Rb;

a

2 JR b.

Examples. Given 6 = 12, and a =^ 200, to determine R. Here 2002 10000

12 ~ 833|.

/i' =

4X12

Given R = 675, and b = 12, to find a. Here a = 2^675 X 12 = 2y8T00 == 2 X 90 = 180.

34. Protolem. Given the perpendicular distance between two par- allel tangents B D = b {fig- 7), the distance between the two tangent points A B = a, and the first radius E C = R of a reversed curve uniting the tangents HA and B K. to find the chords A C ~ a' and C B = a", and the second radius CF = R'.

Solution. Draw the perpendiculars E G- and FL. Then the right triangles A B D and E A G are similar, since the angle B AD ^

i8 CIRCULAR CURVES.

iAEC= AE G. Therefore AB : B D = E A : A G, or a : b

2Rb

a

Since a' and a" are 32) parts of a, we have

a" = a a'.

To find R' the similar triangles A B D and F B L give A B : B D = F B : B L,ox a :b = R' '. ^ a" ;

a a"

Example. Given 6 = 8, a = 160, and R = 900, to find a', a", and

/?'. Here a' = ^ = 90, a" = 160 90 = 70, and R< =

160 X 70 _^^ -2X8 =700.

35. Corollary 1. If 6, a', and a" are given, to find a. A', and A' , we have 34)

^ a = a' + a" ; R=—; R' = 1^.

2 6 26

Example. Given 6 = 8, a' = 90, and a" = 70, to find a, A, and R

Here a = 90 -f 70 = 160, A = -g j< 8 = 900, and A' = ^xS = 700.

36. Corollary 2. If A, A', and h are given, to find a, a', and a'\

c have 35), A B«= 26 (A + ^');

V r> I -ni aai + aa" a (a' -fa'') a2 wc have 35), R -j- R' = ^b ~ 2b ~ 2b- Therefore

.'.a = y2 6(A-t-A'). Having found a, we have 34)

a a

Example. Given A = 900, A' = 700 and 6 = 8, to find a, a', aim

a". Here a = ^2 X 8 (900 + 700) = ^16 X 1600 ^- 160, a' =-

8 X 900 X 8 ^^ - ,, 2X700X8 _ jg^j = 90, and a" = ^ = 70.

REVERSED CURVES.

19

37. Problem. Given the angle A K B = K, which shows the change of direction of two tangents HA and B K {fig. 8), to unitr. these tangents by a reversed curve of given common radius R, starting from a giv- en tangent point A.

3l

B K

^^ Fig. 8.

Solution. With the given radius run the curve to the point Z), where the tangent D N becomes parallel to D K The point D is found thus. Since the angle N G K, which is double the angle II A D {(j 2, II.), is to be made equal to A KB = K, lay off from FIA the angle HA D=\E Measure in the direction thus found the chord AD = 2R sin. ^ 75: This will be shown 69) to be the length of the chord for a deflection angle ^ K. Having found the point D, measure the perpendicular dis- tance D M = b between the parallel tangents.

The distance DB = 2DC = a may then be obtained from the for- muln 3.3, Cor.)

l^ a = 2 ^ITb .

The second tangent point B and the reversing point Care now ue- tcrniined. The direction o( D B or the angle B DNmnj also I)e ob- tained ; for sin BDN

sin, DBM = TTiF,, or

sin. BDN

b

a

38. Problem. Given the line A B = a {fig. 9) which Joins the fixed tangent points A and B, the angles HAB = A and ABL = B, tnd the first radius A E = R, to find the second radius B F = R of a Teversfd curve to unite the tangents H' A and B K.

First Solution. With the given radius run the carve to the point Z), ohere the tangent D N becomes parallel to B K. The point D is found

20

CIRCULAR CURVES.

thus. Since the angle H G N, which is double HA D 2, II.), is equiil to J. CO S, lay off from HA the angle HA D ^ (At^ B), and measure in this direction the chord A D = 2 R sin. ^ (A&o^) 69)

Setting the instrument at Z), run the curve to the reversing point C in the line from D to B {^ 32), and measure D C and C B. Then the similar triangles DEC and BFC give DC:DE =^ CB : B F, or D C : Ji ^ CB:R';

CB

.R'^.

DC

X R-

Second Solution. By this method the second radius may bt founu by calculation alone. The figure being drawn as above, we have, in the triangle A B D, AB = a, AD = 2R sin. ^ (A B), and the included angle DAB = HA li ~ HAD = A h (A B) ^ ^ {A -\- B). Find in this triangle (Tab. X. 14 and \2) B D and the angle ABD. Find also the angle DBL^B-\-ABD.

Then the chord C B = 2 R' sin. hBFC =2R' sin. D B L, and

the chord D G CB = BD DBL,

= 2R sin. ^DE C = 2R sin. DBL 69). But D C; whence 2 R' sin. D B L = B D 2 R sm

.R>

BD

2 sin. DBL

R.

"When the point D falls on the other side of A, that is, when the angle B is greater than jl, the solution is the same, except that the mgle DAB is then 180° ^(A -\- B), and the angle DBL= B ABD.

REVERSED CURVES.

21

39. Probloiia. Given the length of the common tangent D G a^ and the angles of intersection I and I' (Jig. 10), to determine the common radms C E = C F = li of a reversed curve to urate the tangents II A rtnn B L.

Fig. 10.

T-

Solution. By § 4 wc have DC = R tan. | /, and CG= R tan. | /' . whence R (tan. ^ / + tan. hi') = D C -{- C G = a, or

R =

tan. ^ / + ti^n- k ^' This formula may be adapted to calculation by logarithms ; for we

have (Tab. X. 35) tan. ^7+ tm.^P = ^T.'^^jcot fj- Substituting this value, we get

rw R - «gos. ^7cos. ^7^

sin.i(^+/0

The tangent points A and B are obtained by measuring from D a iistance J. Z) = 72 tan |- 7, and from G a distance B G R tan. \ I',

Example. Given a = 600, 1 = 12°, and F = to find R. Here

a = 600 2.778151

i7=6° cos. 9.997614

f 7' = cos. 9.998941

R = 3427.96

2.774706 sin. 9.239670

3.535036

22

CIRCULAR CURVES

40. Problem. Given the line AB = a {fig- 10), which jchis the fixed tangent points A and B, the angle DAB = A, and thr angle A B G = B,io Jind the common radius E C = CF = Rof ar, versed ■:urre to unite the tangents HA and B L.

Solution. Find Jirst the auxiliai-y angle A K E = B KF, ivhich inmj be denoted by K. For this purpose the triangle A E K gives A E: E K = sin. K : sin. E A AT. Therefore E K sin. K = A E sin. E A K ~ R cos. A, since EAK = 90^ A. In like manner, the triangle BFK gives FK sin K= BF sin. FBK = R cos. B. Adding these equations, we have {E K-\- FK) sin. K= R (cos. J. -\- cos. B), or, since E K + FK = 2 R, 2 R sin. K = R (cos. A + cos. B) Therefore, sin. K = ^ (cos. A -\- cos. B). For calculation by loga- rithms, this becomes (Tab. X. 28)

sin K = cos. i(A-\- B) cos. ^(A B).

Having found K, we have the angle AE K = E = 18(P K EAK= \%QP K (90^ yl) = 90° + ^ Z; and the angle BFK= F= 180°— K— FBK = 180° TT— (90=— J5) = 90- -{- B K Moreover, the triangle A E K gives Ah A K = sin. K: sin. E,or R sin. E= J..K'sin. K and the triangle B F K gives BF:BK = s\n.K: s'm.F, or R sin. F = B K sin. K. Adding these equations, we have R (sin. E -f- sin. F) = (A K -j- B K) sin. K a sin. K. Substituting for sin. E 4- sin. Fits value 2 sin. ^ {E -j- l^

COMPOUND CURVES. 2S

(^g_ ^ (E F) (Tab. X. 26), we have 2 li sin. .^ (A' -|- F) cos.

i a sin. K „.

^(£'_F)=asin.A:. Therefore R = ^1^77(5-4. f)^os. U^- -F) ' *'*

nally, substituting for A' its value 90° -f ^ A', and for Fits value

grjo Lj. B A', we get h {E + F) = 90° [A' ^ (.1 + 13)1 an J ,^ (A' F) = i (yl /}) ; whence

COS. [K- ^ {A 4- Z^)J cos ^(A B)

Eximple. Given a =1500, A = 18°, and B = 6°, to find /.'. Here ^ (^ 4- C) = 12° cos. 9.990404

i (^1 i?) = cos 9 997614

A' = 76° 36' 10" sin. 9.988018

Aa = 750 2.87.^)001

K -^{A-^- B) ^ 64° 36' 10 COS. 9.632347 J(^ /?) = 6*' COS. 9.9976 U

2.863079

9.629961

/{= 1710.48 3.233118

B. Compound Curves.

41. irhcorem* If one branch of a compound curve he produced^ HJilil the tangent at its extremity is parallel to the tangent at the extremity of the second branchy the common tangent point of the tico arcs is in the straight line produced, which passes through the tangent points of these par- allel tangents.

Demonstration. Let A CB (fig. 11) be a compound curve, uniting the tangents HA and B K. The radii C'F and C'F, being perpen- dicular to the common tangent at C 2, 1.), are in the same straight line. Continue the curve A C to Z>, where its tangent OD becomes parallel to B K, and consequently the radius DE parallel to B F. Then if the chords CD and CB be drawn, we have the angle CE D = CFB; whence E CD, the half-supplement of C E D, is equal to F CB, the half-supplement of CFB. But E CD cannot be equal to F C B, unless CD coincides Avith CB. Therefore the line B D pro- inced passes through the common tangent point C

24

42. Problem.

compound curve.

CIRCULAR CURVES.

To find a limit in one direction of each radius of ol

!S)lution. Let A I and Bl (fig. 11) be the tangents of the curve. Through the intersection point 7, draw IM bisecting the angle A IB. Draw A L and B M perpendicular respectively to A I and B /, niect- ing 1 M in L and M. Then the radius of the branch commencing on the shorter tangent A /must be less than AL^ and the radius of the branch commencing on the longer tangent B I must be greater than BM. For suppose the shorter radius to be made equal to A L^ and make IN = A I, and join L N. Then the equal triangles A IL and NIL give A L = L N; so that the curve, if continued, will pass through iV, where its tangent will coincide with IN. Then 41) the common tangent point would be the intersection of the straight line through B and iVwith the first curve; but in this case there can be no intersection, and therefore no common tangent point. Suppose next, that this radius is greater than A L, and continue the curve, until its tengent becomes parallel to BI. In this case the extremity of the

COMPOUND CURVES. 25

curve will fall outside the tangent BIm the line A iV produced, and a straight line through D and this extremity will again fail to intersect the curve already drawn. As no common tangent point can be found when this radius is taken equal to A L or greater than A L, no com- pound curve is possible. This radius must, therefore, be less than A L. In a similar manner it might be shown, that the radius of the other branch of the curve must be greater than B M. If we suppose the tan- gents A I and B J and the intersection angle / to be known, we have {^ 5) A L = A I cot. ^ /, and B M = B I cot. ^ 7. These values are therefore, the limits of the radii in one direction.

43. If nothing were given but the position of the tangents and the tangent points, it is evident that an indefinite number of different com- pound curves might connect the tangent points ; for the shorter radius might be taken of any length less than the limit found above, and a corresponding value for the greater could be found. Some other con- dition must, therefore, be introduced, as is done in the following problems.

44. Problem. Given the line AB = a {Jig. 11), which joins Oie fixed tangent points A and B, the angle B A I =^ A, the angle AB I = D, and the first radius A E B, to find the second radius B F = R' of a compound curve to unite the tangents HA and B K.

Solution. Suppose the first curve to be run with the given radius from A to Z), where its tangent DO becomes parallel to BI^ and the angle IAD = i (^ -f- B). Then 41) the common tangent point C is in the line B D produced, and the chord CB = CD -j- B D. Now in the triangle AB D we liave A B ^ a^ AD = 2 R sin. ^ {A -\- B) 69), and the included angle D A B =^ I A B IAD = A ^ (A -{- B) ^ ^ {A B). Find in this triangle (Tab. X. 14 and 12) the angle A B D and the side B D. Find also the angle CBI=B ABD.

Then (^ 69) the chord CB ^ 2 R' sin. CB Z, and the chord CD = 2 R sin. CD0=2R sin. CBI. Substituting these values of CB and CD in the equation found above, C B = CD -\- B D, we have 2/^' sin. CZ3/= 2 R sin. CBI+BD;

l^ -.R' = R+ ^^

2 sin. CBI

When the angle B is greater than A, that is, when the greater radius »8 given, the solution is the same, except that the angle D A B ^

26 CIRCULAR CURVES.

J (D A), and C BI'is found by snbtracting the supplement oi A Li IJ from B. We shall also find CB CD B D^ and conscauenilv

^'^ ~ ^^ 2 sin. CBI'

If more convenient, the point D may be determined in the field, by laying otf the angle I A D = ^ [A -j- B), and measuring the distance A D -^ 2 R sin. i ( J. -j- B). BD and CB I may then be measured, instead uf being calculated as above.

Example. Given a = 950, ^ = S^', /5 = 7^, and R = 3000, to find A''. Here AD = 2 X 3000 sin. h (S^ + 7°) = 783.16, and DA B -= ^ (8° 7°) = 30'. Then to find .1 B D we have

AB A D ^ 166.84 2.222300

i (J DB -\- A B D) = 89° 45' tan. 2.360180

4.582480 A B -j- AD = 1733.16 3.238831

I (.1 Z) L.' .1 Z; D) = 87° 24' 17" tan. 1.343641

.'.ABD = 20' 43" Next, to find B D,

A D == 783.16*

2.893849

DAB = 30'

sin

7.940845>

0.834691

ABD = 20' 43"

sin

8.611948

jBZ) = 167.01

2.222743

B-

-ABD= CBI = 4^S9' 17" 2 (/2' R) ^ 2058.03

sin.

8.909292

3.313451

.-.R' R = 1029.01

R' ^

= 3000 4- 1029.01 =- 4029.01

To find the central angle of each branch, we have CI B 2 C B 1 = 18' 34", which is the central angle of the second branch; and AEC=AED-CED = Ai-B 2CBl = 41' 26", which is the central angle of the first branch

45. Problem. Given (Jig. 11) the tangents Al= T, B I = T',

the angle of intersection = /, and the first radius A E = R, to find the second radius B F = R'-

Solution. Suppose the first curve to be run with the given radius from A to D, where its tangent D 0 becomes parallel to Bl. Through

COMPOUND CURVKS. 27

D draw D P parallel to .4 7, and v/c have IP = DO = AO = R tan. ^ 7 (M)- Then in the triangle D P B vre have D P = 1 0 =^ A1—A0= T - R tan. ^I, BP=BI— IP=T'— R tan. ^ 7, and the included angle DPB = AIB = 180' 7. T'/nc/ m //ijs ^v- angle the angle C B I, and the side B D. The remainder of the solution is the same as in § 44. The determination of the point D in the field is also the same, the angle IAD being hei'e = ^ 7. When BU gi cater than A, that is, when the greater radius is given, the solution is d'.c same, except that D P = R tan. ^ I T, and B P = R tan. 1 1

Example. Given T= 447 32, T' = 510. 84, 7 = 15° and R = 3000, to find R'. Here 7^1 tan. | 7= 3000 tan. 7^° = 394.96, DP = 447.32 394.96 = 52.36, BP = 510.84 394.96 = 115.88, and DP B = 180^ 15° = 165°. Then (Tab. X. 14 and 12)

SP 7)P = 63.52 1.802910

|(SDP + P^Z)) = 7=30' tan. 9.119429

0.922339 .BP + 7)P = 16824 2.225929

^{BDP PBD) = 50' 44" tan. 8696410

.'.PBD= C23 7 = 4"^ 39' 16" Next, to find B 7),

Z)P= 52.36 1.719000

DP B = lb° sin. 9.412996

1.131996 P Z^ D = 39' 16" sin. 8.909266

2^7) =167.005 2.222730

Ibe tangents in this example were calculated from the example in ^ 44. The values of CB I and B D here found differ slightlv from those obtained before. In general, the triangle DBP is of better form for accurate calculation than the triangle AD B.

46. If no circumstance determines either of the radii, the condition may be introduced, that the common tangent shall be parallel to the line joining the tangent points.

Problem. Given the line AB = a (Jig. 12), which unites the fixed tangent points A and B, the angle I A B = A, and the angle A B I = B, to find the radii A E = R and B F = R' of a compound '.urve^ having the common tangent I) G parallel to A 12

28

CIRCULAR CURVES.

Solution. Let A C and B C be the two brai^ches of the required curve. ar:d draw the chords A C and B C. These chords bisect the

fig 12

angles A and B ; for the angle D A C = ^ ID G = ^ I A B,sluA the angle G B C =--- ^ D G 1 = h A B I. Then in the triangle A C B wo, have AC\AB^ sin. A BC : sin. A C B. But ACB= 180^ (C^ Z5 + CB A) = 180" 4 (^1 4- B), and as the sine of the sup- plement of an angle is the same as the sine of the angle itself. sin. A CB = sin. \ {A -^ B). Therefore A C : a = sin. ^ B : sin.

^ (A -f- B), or A C = sin" 1^4, B) ^^ ^ similar manner we should

a sin. ^ A

iAC

^^^ I^C= ,in. i (A% B) ' ^'o->^ ^^e have 68) 72 = -^j^-p; , and j^ , or, substituting the values of ^ Cand B Cjust found,

U' =

jB C

sin.

i a sin. ;V 5

a sin.

sin. ^ A sin. ^ (^ + 5) ' sin. ^ B sin. ^ ( A + i^)

Example, Given a = 950, ^ = 8°, and B = 7°, to find R and /2' Here

COMPOUND CURVES'. 29

i a = 475 2.676 '.94

^ B ^ 30' sin. 8. 785675

1.462369 1^ = sin. 8.843585

i (A + ^) = 7^ 30' sin. 9.115698

7.959283

R = 3184.83 3.503086

i ransposing these same logarithms according to the formula for R «e hare

? « = 475 1.676694

•M = sin. 8.843585

h B = 30' sin. 8.785675 ^ (^ + Z?)-= 7-= 30' sin. 9 115698

1.520279

7.901373

R' = 4158.21 3.618906

47. Problem. Glveji the line AB = a {Jig. 12), wkich unites the fixed tangent points A and B, and the tangents AI = T and BI = T', Mjind the tangents AD = x and B G = y of the tico branches of a com- pound curve, having its common tangent D G parallel to A B.

Solution. Since D C = A D = x, and C G =^ B G = y, we have fjQ = x-j~jj. Then the similar triangles IDG and lAB give f D : lA = D G : A B, or T - X - T ■= X -\- y : a. Therefore aT ax = Tx + Ty (1). Als( ^ 0 : A I = B G : B I, or T:T = y:T'. Therefore Ty = T r (^'). Substituting in (1) the ralue of Ty in (2), we have a T— ax ■. 7 r + 2'' :r, or a a: + Tor -|- T'x = aT;

a-\-T-\-T''

T'x and, since from {2),y = -y- ,

a-\-T-\-T'

The intersection points D and G and the common tangent pomt C are now easily obtained on the ground, and the radii may be found by the usual methods. Or, if the angles TAB = A and A B I -^ B

30

CIRCULAR CURVES.

have been measured or calculated, we have 5) R =^ x cot. ^ A, and R' = y cot. ^ B. Substituting the values of x and y found above, wa

have R = q^y^r' ' ^^"^ ^ = M=^M= T<

Exampie. Given a = 500, T = 250, and T' = 290, to find x and y Here a + 7 + I' = 500 + 250 + 290 = lOtO ; whence a: = 500 >< 250 -r 1040 = 120.19, and ^ = 500 X 290 -r- 1040 = 139.42.

48. Probleaea. Given the tangents Al = T, Bl =T', and tfu angle of intersection /, to unite the tangent points A and B (Jig. 13) hy a compound curve, on condition that the tivo branches shall have their angles of intersection IDG and I GD equal.

Fig 13

^ututiirn. feince IDG = lGD = hl^yf& have I D = 1 G. Rep '■escnt the line Ih ~ 1 Ghy x. Then if the perpendicular IHhe let

The radii of an oval of given length and breadth, or of a three-centre arch of given epan and rise, may also be found from these formulae In these cases A-^ B = 90'-,

and the values of R and R' may be reduced to R = ; ^^, 7;;^ and R' =

aTi

a+ T— Ti calculated

a+T' T . These values admit of an easy construction, or they may be readily

TURNOUTS AND CROSSINGS. 31

fall fiom /, we !iave (Tab. X. U) D H = I D cos. IDG = x cos. ^ i, sxiUDG^'lx COS. ^ /. But DG = DC^CG = AD-\-BG== 7' ~ 2 + T' X = r + Ti 2x. Therefore 2 a: cos. \l = r + T' 2 .r, or 2 T + 2 .r cos. i / =- T -\- T' ; whence jt =

j^:^^^;j^,or(lab.X.25)

I^' 2r =

^{T+rO

CO

s.^i/

The tangents AD = T— x and B G =- T' x are now readilj (bund. With these and the known angles of intersection, the radii oi deflection angles may be found 5 or § 11) This method answers very well, when the given tangents are nearly equal ; but in general he preceding method is preferable.

Example. Given T =r 480. T' == 500, and 7=18=, to find :r. Here

^ (T -\- T') = 2-L5 2.3891 G6

^7=4=^ 30' 2 COS. 9.997318

X = 246.52 2.391848

Then AD = 480 246.52 = 233.48, and B G =- 500 246.52 -= 253.48. The angle of intersection for both branches of the curve being y°, we find the radii AE = 233.48 cot. 4^ 30' = 2P66.65, and B F ^= 2'>3.t8 cot. 30' = 3220.77.

Article III. Turnouts and Crossixgs.

49. The Uaual mode of turning off from a main track is by switch- ing a pair of rails in the main track, and putting in a turnout curve tangent to the switched rails, wiih a frog placed where the outer rail -^f the turnout crosses the rail of the main track. A B (fig. 14) repre- sents one of the rails of the main track switched, B /''represents the outer rail of the turnout curve, tangent to A B, and E shows the posi- lion of the frog The switch angle, denoted by S, is the angle DAB, ^urnled by the switched rail A B with A D, its former position in the main track. The frog angle, denoted by E, is the angle G EM made Ijy the crossing rails, the direction of the turnout rail at 7^ being the tangent EM at that jjoint. In the problems of this article the gauge ot the track D C. denoted by g, and the distance D B, denoted by d are supposed to be known. The switch angle S is also supposed to bo known, since its sine (Tab. X. 1) is equal to d divided by the lengtu

Ori

CIRCULAR CURVES.

of the switched rail. If, for example, the rail is 18 feet in lengih and i = .42, we have S == P 20'.

A. Turnout from Straight Lines.

50. ProfolCBll. Given the radius R of the centre line of a tur*-oui (JiQ. U), to fold the frog angle G FM = F and the chard B F.

Solution. Through die centre E draw E K parallel to the n : track. Draw Ci/and FK perpendicular to E K, and join L F. Then, since E Fis perpendicular io F?,J and F K is perpendicular to FG, the angle E rK = G FIvl = F; and since E B and B H are respectively perpendicular to A B and A D, the angle E B H ^ DAB

= S. Now the t'ianglc E F E gives (Tab. X. 2) cos. E F K = f-^

But E F, the radius of the outer rail, is equal to R -\- ^ g, and FK=CH=Bn— BC=B E cos. E B H B C = ,R-\- ^ g) cos. S (g d). Substituting these values, we have cos. E FK ~ IK + iff) COS. 5 -{g d)

B + is

IS^

,or

cos. F = COS. S

9 ^

RTT9

From thin formula Fmay be found by the table of natural cosines To adapt it to calculation by logarithms, we may consider^ d to be equal to (g d) cos. S, which will lead to no material error since

TURNOUT FKOM STRAIGHT LINES. 33

^ rf is very small, and cos. S almost equal to unity The value of COS. F then becomes

1^ COS. F = (^ ? .9 + c?) COS. S

To find BF, the right triangle BCF gives (Tab. X. 9) BF = BC Bin. BFC- ^"^ BC = y d and the angle BF C = B FE

CFE -_ (900 _ LBEF) - (90° - F) = F - i BEF But

BEF - Z?/.F - EBL = F - S. Therefore BFC = F-

■? ^-^ ~ ^) = 2 (^+ ^)- Substituting those values in the formula /or B F, \vt have

sin. '^{F+S)'

By the above formula; tlie columns headed /"and i^i^in Table V are calculated.

Example. Given g = 4.7, d = .42, S = 20', and R = .500, to

find /"and Z3 F. Here nat. cos. S = .999729, g d = 4.28, /2 + ^^

= .^Oo.SS, and 4.28 -^ 502 35 = .008520. Therefore nat. cos. F =

999729 .008520 = .991209, which gives F=r 36' 10" Next to

liud OF,

g d = 4.2S 0.631444

H^+ S) =4°28'5" sin. 8.891555

, 25 F=^ 54.94 1.739889

M ProblCBta. Given the frog angle GFM = F {Jig. 14)^ to find^ the radius R of the centre line of a turnout, and the chord B F.

Solution. From the preceding solution Ave have cos. F = j-h2g)co3- S—(g~d)

K +Ti T^fjerefore (R + ^ g) cos. F = {R + ^ g)

COS. ^ (g d), or

^ R-^lg= 9-d

cos. aS' COS. F

For calculation by logarithms this becomes (Tab. X. 29)

£^= 72 + 1^ = h i9~d)

sin.i(i^4- ^')sin. i(/^— ^y

Having thus found R + ^ g, we find R by subtracting ^ g. B F u found, as in the preceding problem, by the formula

7^ E = fJ d

3 sin. !(/''+ 6')

S4

CIRCULAR CURVES.

Example, Given g = 4.7, d = .42, S = 1'^ 20', and F = 7^ to find

«. Here

i (^ —c/) = 2.14 0.330414

i (F-f 5) = 4'^ 10'

I (Z'— 5) = 50'

sin 8.861 283 sin 8.G93998

R + ^g ^ 595. 85 .-. R = 593.5

7.555281 2.775133

52. Problem. To find mechanically the proper position of a given frog.

Solution. Denote the length of the switch rail by /, the length of the frog by/, and its width by w. From B as a centre with a radius BH= 2/, describe on the ground an arc G H K {fig. 15), and from the inside of the rail at G measure G H = 2 d, and from H measure HK such that HK : B H = ^ ic : f ov H K: 21 ^ ^ tv : f; that is,

HK = y- . Then a straight line through B and the point K will ■-trike the inside of the other rail at F, the place for the point of the

tTOg. For the angle HB K has been made equal to h ^' and if B M be drawn parallel to the main track, the angle MBH is seen to be equal to h S. Therefore, MBK = BFC = ^ (F -[• S), and this was shown 50) to be the true value of B F C.

53. If the turnout is to reverse, and become parallel to the main track, the problems on reversed curves already given will in general be sufficient. Thus, if the tangent points of the required curve are fixed, the common radius may be found by § 40 If the tangent point at the switch is fixed, and the common radius given, the reversing oint and the other tangent point may be found by ^ 37, the change )f direction of the two tangents being here equal to S. Bur. when the

TURNOUT i^ROM STRAIGHT LINES.

35

frog angle is given, or determined from a given first radius, and the point of the frog is taken as the reversing point, the radius of the sec- ond portion may be found by the following method.

54. Problem. Given the frog anjle F and the distance H B = b (Jig. 16) between the main track and a turnout, tojind the radius R' of the second branch of the turnout, the reversing point being taken opposite F, the fM}int of the frog.

Fig. 16

Solution. Let the arc FB be the inner rail of the second branch, FG = R' ^g its radius, and B the tangent point where the turnout becomes parallel to the main track. Now since the tangent FK is one side of the frog produced, the angle HFK= F, and since the angle of intersection at iTis also equal io F, BF K= ^ F {(^2, II.) : whence

BFH=hF Then (^ es) F G = ^r^^^^ , or R' -

:^-^^ (Tab. X. 9), or i Bi^= ^-^

iBF

But BF

sin. iF- sin

6tituting this value of ^ B F, we have

^9 - Sub

R'

^ ^ sin.2 1 F

In measuring the distance 11 B = b, it is to be observed, that tb« leidths of both rails must be included.

36 CIRCULAR CURVE'3.

Example. Given 6 = 6 2 and i^ = 8^, to find R'. Here

16 = 3.1 0.491362

1 F = 4^ sin. 8.84358.5

1^^/.^= 44.44 1.647777 i F= 4' sin. 8.843585

/?' i^r = 637.03 2.804192 •.R' = 639.43

B. Crossinrjs on Straight Lines.

55. When a turnout enters a parallel main track by a second switcn it becomes a crossing. As the switch angle is the same on both tracks a crossing on a straight line is a reversed curve between parallel tar. gents. Let H D and iV/v (fig. 17) be the centre lines of two parallc tracks, and HA and B /v the direction of the switched rails. If now the tangent points A and D are fixed, the distance A B ^ a may be measured, and also the perpendicular distance B P = b between ?.;■? tangents // P and B K. Tlicn the common radius of the crossing A C B may be found by ij 33 ; or if the radius of one part of the cross- ing is fixed, the second radius may be found by § 34. But if both frog nngles are given, we have the two nidii or the common radius of a crossing given, and it will then be necessary to determine the distance A B between the two tangent points.

56. Problem. Given the perpendicular distance G N= b (Jig. 17) between the centre lines of two parallel tracks, and the 7Xidii E C =-^ R and CF ^ R' of a crossing, to find the chords A C and B C

Solution. Draw E G perpendicular to the main track, and A L CM, and B D parallel to it. Denote the' angle A E C by E. Then, since the angle A E L = AUG = S, we have CE L = E -\- S, and in the right triangle C E jV (Tab. X. 2), CE cos. OEM = R cos. {E -]- S)=^ EM= EL L M. But EL = AE cos. A EL = R cos. S, and L M : L' M = A C : B C Now AC: B C ^ E C: CF= R: R>. Therefore, L M : L'M = R: R\ or L M : LM ■\- L'M= R: R + R'; that is, L M : b 2d = R : R -\- R', whence

L M = "j^ , „, - . Substituting these values of E L and L Mm the

equation for R cos. {E + S), we have R cos. {E -\- S) = R cos. S R{b 2d) ' R4- R' ■>

CROSSINGS ON STRAIGHT LINES.

S"?

G^

/ n 1 e\ c b 2d

COS. {L + S) = COS. o

A' + R'

Having thus found jE + S, we have the angle E and also its equal VFB. Then 69)

irr- ^C= 2i2sin. iJE;; Z5 C = 2 72' sin. ^ ^.

We have also A D = A C -\- B C, since .4 C and Z? C are in the Ecme straight line 32), or .d C = 2 (i? + 72') sin ^ ^.

Fig. 17.

Whcu the two radii are equal, the same formulae apply by making R' = R. In this case, we have

COS. (E-\-S) = COS. S ~ '^ ;

2 72

AC= BC= 2Rs\n.^E.

Example. Given d = .42, g = 4.7, 5=1° 20', 6 = 11, and the an- gles of the two frogs each 7°, to find A C = B C =^A B. The common radius 72, corresponding to F = 7°, is found (^ 51) to be 593..5. Then 2 72= 1187, 6 2 (/ = 10.16, and 10.16^-1187 = .008.56. Therefore, nat. cos. {E -\- S) = .99973 .00856 = .99117 ; whence E -^ S = 1°Z1' 15". Subtracting S, we have E = 17' 15" Next

2 72 = 1187 3.074451

i i?; = 8' 37^" sin. 8.7.39106

^ C= 65.1

! 813557

38

CIRCULAR CURVES.

C. Turnout from Curves.

57. Problem. Given the radius R of the cadre line of the mair track and the frog angle F, to determine the position of the frog by means of the chord B F {figs. 18 and 19), and to find the radius R' of the cen tre line of the turnout.

Fig. 18.

Solution, I. When the turnout is from the inside of the cunrt (fig. 18). Let A G and CF be the rails of the main track, AB the switch rail, and the arc ^i^the outer rail ot the turnout, crossing the inside rail of the main track sliF. Then, since the angle E FK has its sides perpendicular to the tangents of the two curves at F, it is equal to the acute angle made by the crossing rails, that is, E F K = F. Also E B L ^ S. The first step is to find the angle B KF denoted by K. To find this angle, we have in the triangle B FK{Tab. X. 14), BK-\- KF:BK—KF= tan ^ (B FK -{- FB K) : tan. ^ (B FK— F B K). But B K = R -\- ^ g d, and K F =^ R ^ g. Therefore, B K -^ KF = 2R d, and BK KF =■- g - d. Moreover, B FK = BFE + EFK= BFE + F, and FBK= EBF—EBK = BFE S. Therefore, BFK—FBK = F-^ S. Lastly, BFK -f- FBK= 180° K. Substituting these values in the preceding

I roportion. we have 2R d:g —d^ tan. (90° ^K): tan. | (F-

S),

TURNOUT FROM CURVES. 39

or tan. (90^ - i K) = il?.=3^^^ill±^ . But .an. (90» - J K)

= cot. iii = i^rA'*'

l^' . tan. h K= - = .^ ~ , ,r, , o>

^ {2 11 d) tan. J (F+ /S)

Next, to find the chord B F, we have, in the triangle B F C {T:ah.X.\2),BF=^/'^j.H^. But B C = g - d, and BCF^

180° FCK = 180° (90° h K) = 90° + ^ A', or sin. B C F = COS. I K. Moreover, B F C =^ hA^ -\- S) ', for B F K = KFC -f B f''c, and F B K = K C F —BFC = KFC BF C. There- fore, B F K - FBK^2B F C. But, as shown above, B FK FB K= F+ S. Therefore, 2 5 FC= F+ 5, or Z?FC= ^ (F+ 5). Substituting these values in the expression for B F, we have

r^ ^ ,, ^ jg d) COS. |i^:

•^ sin.H^+'5>') '

Lastly, to find R', we have {k ^^) R' -^ \g = E F = ^^J^ ^EF But BE F = BLF EBL, and BLF = L FK + L ^F = F + TT. Therefore, BEF =F -\- K S, and

sin. ^(F+A^— 6^)

II. When the turnout is from the outside of the curve, the preceding solution requires a few modifications. In the present case, the angle EFK' = F (fig. 19) and EB L = S. To find K, we have in the triangle B F K, K F -\- B K : KF B K = tan. ^ (FB K + B F K) : tan. i (F C A' i5 F A^. But KF= R-{-lg, and B K = R i g + d. Therefore, A"F + B K =-- 2 R + d, and KF BK = g d. Moreover, F B A' = 180° F B L = 180° (EBF—EBL) = 180°— (E BF S), and BFK = 180° BFK' = 180^ (BFE -\- EFK') = 180° {E B F + F). Therefore, FBK—B FK = F + ^. Lastly, Fi3 K -\- B FK = 180 K Substituting these values in the preceding proportion, we have 2R-\-d: q d= tan. (90° ^K) : tan. i (F + S), or

,an. (90° - i A^) =. (2A±^^i^±^ . But tan. ('90° - 1 /T) =

tan. h K

2

g d

(2R -\-d) tan. ^ (F+ .S)

40

CIRCULAR CURVES.

Next to find B F, we have, in the triangle B T -^ 3 F ^ B C sin. B CF

sin. BFC

But BC = g ~ d, and B CF = 90^

En

AA, or

Fig. 19.

sin. BCF = COS. ^K. Moreover, BFC=^(F+ S); for BFK = KFC—BFC,and FB K= KC F-\- B F C = KF C + BF C. Therefore, FBK— B FK=2B F C. But, as shown above, FBK— BFK= F+ S. Therefore, 2 BFC = F-}- S,ov B F C=^ {F-\- S). Substituting these values in the expression for B F, we have, as before.

BF= (ff ^) cos. hK*

},BF

Sin. 1(^+5) Lastly, to find R', we have GS) R' -\- ^ fj =r E F =

sin. i BEF

Since ^ Z is generally very small, an approximate valu iof B F may be obtained

By making cos. ^ K = 1. Tliis gives B F =

g-d

- , ; T-, r— c> 1 wbich is identical sm. i (F+ 5) '

with the formula for BF'm^ 50. Table V. will, therefore, give a close approxima-

4on to the value of .B F on curves also, for any value of F contained in the table

TURNOUT FROM CURVES. 41

Bvit BEF = BLF - EBL, and BLF^LFK LK F = p _ A-. Therefore, DEF=F—K— 5, and

sin.^iF— K—S)

Example. Given g = 4.7, d = .42, 5 = 20', R - 4583.75, and F = 7^, to Hnd the chord B Fund the radius R' of a turnout from the miside of the curve. Here

q cl = 4.28 0.6.31444 0.631444

2/2 + (/= 9167.92 3.962271

1 (/.^_}_ S) = 10' tan. 8.862433 ' sin- 8.861283

2.824704 1.770161

1 7^- ^ 22' 1.8" tan. 7.806740 cos. 9.999991

GF= 58.905 1.770152

2 0.301030

|(/^ _ 7v ^') = 2^ 27' 58.2" sin. 8.633766

8.934796

/i' 4- -I ^ = 684.47 2.835356

.-.R' = 682.12

58. Problem. To Jind mechanically the proper position of a given frog.

■Solution. Tlie niotliod here is similar to that ah-eady given, when the turnout is from a straight line 52). Draw B .l/(figs. 18 and 19) parallel to /•' C, and we have FBM = B F C = h {F + S), as just shown 57). This angle is to be laid off from B M ; but as F is the point to be found, the chord F C can be only estimated at first, .and B M taken parallel to it, from which the angle ^ (F -]- S) mi\y be laid off by the method of § 52. In this case, however, the first meas- ure on the arc is t/, and not 2 rf , since we have here to start from B i\f, and not from the rail. Having thus determined the point F approxi- mately, B M may be laid off more accurately, and F found anew.

59. When frogs are cast to be kept on hand, it is desirable to have them of such a pattern that they will fall at the beginning or end of a certain rail; that is, the chord B F is known, and the angle F is re- quired.

l2 CIRCULAR CURVES.

Problem* Given the position of a frog by means of the chord B F [figs. 14, 18, and 19), to determine the frog angle F.

g d Solution. The formula B F = gin ^^(F -\- S) ' ^^^^^ ^^ exact on

straight lines 50), and near en'jugh on ordinary curves 57, note), gives

1^ sin.^(F+^)=5:^.

By this formuUi ^ {F -\- S) may be found, and consequently F.

60. Problem. Gii^en the radius R of the centre line of the main tracks and the radius R' of the centre line of a turnout, to find the frog angle F, and the chord B F {figs. 18 and 19).

Solution. I. When the turnout is from the inside of the curve (fig. 18). In the triangle BE Kfind the angle B E K and the side E K. For this purpose we have B E = R' + h g, B K = R -\- ^ g— d, &nd the included angle E BK = S. Then in the triangle E FK we have E K, as just found, E F = R' -{- ^ g, and F K = R— ^ g The frog angle EFK = F .nay. therefore, be found by formula 15, Tab. X., which gives

tan. A F =

_ l(s-6)(5-c)

V

s {s a)

where s is tiie half sum of the three sides, a the side E K, and b and c the remaining sides.

Find also in the triangle EFK the angle F E K, and we have the angle BE F = BEK - FEK. Then in the triangle B E F we have (§69)

1^^ BF=2{R' + ^g) s'm.^ BE F*

II. AVhen the turnout is from the outside of the curve (fig. 19). In the triangle B E K find the angle BEK and the side EK For this purpose we have B E = R' -\- ^ g, B K = R ^ g -\- d, and the in- cluded angle E BK= 180= aS. Then in the triangle E FK vff Iiave E K, as just found, E F = R' -\- ^ g, and F K = R+ ^ g. The angle EFK may, therefore, be found by formula 15, Tab. X., which

gives tan. ^EFK = V^' 7(5-0]^^ ^"^ ^^'° '^"^'^^ ^ ^^' = ^

* The value of B F maj' be more easily found by the approximate formula B F = , and generally with sufficient accuracy. See note to § 57. This re-

nin. i{F+ S)

mark applies also to B F in the second part of this solution.

TURNOUT FROM CURVES. 43

^ ISO'' EFK. Therefore ^F = 90° ^EFK, and cot ^ F =• tm. ^EFK', .

t^ . . cot. ^F= \ 5^ ^— T ' »

•^ ^ ^ s (s a)

where s is tlie half sum of the three sides, a the side ^ K, and 6 and c the remaining sides.

Find also in the triangle EFK the angle FE K, and ive have the angle BE F= FE K BE K. Then in the triangle BE F we have 69)

13^ BF^2{R' + ^g)sm.^BEF

Example. Given g = 4.7, d = .42, 5=1° 20>, R = 4583.75, and /{> r= 682.12, to find F and the chord Z? Fof a turnout from the outsida of the curve. Here in the triangle i3 £ /v (fig. 19) we have BE = ^, ^ i ^ ^ 684.47, BK=R kf} + d = 4581 82, and the angles

BEK+ BKE = S=l° 20'. Then

BK— BE = 3807.35 3.590769

^{BEK+BKE)= 40' tan. 8.065806

1.656575

BK-\- BE = 5266.29 3.721505

^ [BEK— BKE)* = 29.6029' tan. 7.935070

.'. BEK= l"" 9.6029'

^ BK sia EBK .

EK\s now found by the formula EK= sin BEK^ ' ^^' '^S- ^ ^

= log. 4581.82 + log. sin. 178° 40' log. sin. 96029' = 3.721491, whence £ir= 5266.12.

Then to find F, we have, in the triangle EFK, s = ^ (5266.12 -f- 684.47 + 4586.10) = 5268.34, s a =^ 2.22, s 6 = 4583.87, and

s- c = 682.24.

s_6 = 4583.87 3.661233

s c = 682.24 2.833937

s = 5268.34 3.721674 a = 2.22 0.346353

6.495170

4.068027

2)^27T43

^F=3° 30' cot. 72135 71

.•.F=

This angle and the sine of 9 6029' below, are found by the method given in •onnection with Table XIII. If the ordinary interpolations had been used, wa should have found F = 7'^ 7', whereas it should be 7^, since this example is tha •inverse of that in § 57.

14

CIRCULAR CURVES.

To find FEK, we have s as before, but as a is here the side FR opposite the angle sought, we have s a = 682.24, s h = 458.'? 87, and s c = 2. 22. Then bv means of the logarithms just used, we find ^FEK= 3^ 2' 45". Sul)tnicting ^ B E K = W 48", we have ^BEF ^ 27' 57". Lastly. BF = 1368 94 sin. 2^ 27' 57" = 58.897.

The formula ^ J^ = sm.t{F+ S) 5"' "ote) would give BF = 58 906, and this value is even nearer the truth than that just found, owing, however, to no eiTor in the formulfe, but to inaccuracifs inci- dent to the calculation.

61. If the turnout is to reverse, in order to join a track parallel to the main track, as A CB (fig. 20), it will be necessary to determine the reversing points C and B. These points will be detennined, if we find the angles A E C and B F C, and the chords A C and CB.

62 Problem. Given the radius D K = R {Jig 20) of the centrt line of the main truck the common radius E C = CF = R' of the centre line of a turnout, and the distance B G = b between the centre lines of the ^parallel tracks, to find the central angles A E C and B F C and the chorda A C and EC.

Solution. In the triangle A E K fitrd the angle AEK and the side

CROSSINGS ON CURVES. i5

e K For tliis purpose we have AE = R', A K = R d, and tlic included angle E A K =- S. Or, if the frog angle has been previously calculated by § GO, the values of A E K and E K are already known.* Find in the triangle EFK the amjles E FKand F E K For this purpose we have E K^ as just found, E F ^ 2 A", and FK = A -^- R' h. Then AE C = AEK FEK, and BFC ^ E FK. Lastly, (§69)

^^ AC^2Rs\n^AEC; C B = 2 R' sin. ^ B F C.

This solution, with a few obvious modifications, will apply, when the turnout is from the outside of a curve.

D. Crossings on Curves.

63. When a turnout enters a parallel main track by a second switch, t becomes a crossing. Then if the tangent points A and B (fig. 21) are fixed, the distance A B must be measured, and also the angles which A B makes with the tangents at A and B. The common ra- dius of the crossing may then be found by § 40 ; or if one radius of the crossing is given, the other may be found by \ 38. But if one tangent point A is fixed, and the common radius of the crossing is given, it will be necessary to determine the reversing point C and the tangent point B. These points will be determined, if we find the angles AEC vind B F C, and the chords A Cand C B.

64. Problem. Given the radius DK= R {Jig- 21) of the cetitte line of the main track, the common radius E C = C F = R' of the centre line of a crossing, and the distance D G = b between the centre lines of the parallel tracks, to find the central angles AE C and B F C and the chords A Cand CB.

Solution. In the triangle AEK find the angle AE K and the side E K. For this purpose we have A E = R', A K = R d, and the included angle E Ax K = S.

Find in the triangle B FK the angle B F K and the side F K. For this purpose we have B F ^ R', B K= R h + d, and the included &ng\QFBK= 180=^ 6'.

Find in the trianale EFK the angles F E K and EFK. For this

* The triangle AEK does not correspond precisely with BEKm^ ^, A being on the centre line and B on the outer rail ; but the difference is too slight to affect the calculations.

16

CIRCULAR CURVES.

purpose we have E K and FK a.s just found, and E F —- 2 W. rhet> AEC =^ AEK— FEK, and BFC^EFK—B FK. Lastlv 69,)

AC=^2R< sm.hAE C', CB == 2 R' sin. ^ BF C. D

Fig. 21.

Article IV, Miscellaneous Problems.

65, Problem. Given A B = a [Jig. 22) and the perpendicular B C = b, to Jind the radius of a curve that shall pass through C and the tangent point A.

Solution. Let 0 be the centre of the curve, and draw the radii A 0 and C 0 and the line CD parallel to A B. Then in the right triangle COD we have 0 C^ = CD"" + OD^ But 0 C = R, CD = a, and OD = AO AD = R b. Therefore, R"" = a"" -{- {R 6)» = a^ + R^ 2 Rb -\- b\ or 2 Rb = a^ -{- b^ ;

2 b

Example. Given a = 204 and b = 24, to find R. Here R »-

204-2 24 2X-24 + 2 = «67 + 12 = 879.

iillSCELLANEOUS PROBLEMS.

47

C6. Corollary 1. If R and b are given to find A B = a, that vs, to determine the tangent point from which a curve of given radius

most start to pass through a given point, we have (§65) 2Rb = fl«-f i^ora' = 2Rb b^;

.'.a = ^b {2R b).

Example. Given 6 = 24 and 72 = 879, to find a. Here o =- /94 (1758 24) = ^ 41616 = 204.

67. Corollary 2. If R and a are given, and b is required, we have (§65) 2 Rb = a^ + 6^ or 2Rb = —a}. Solving this equation, we find for the value of b here required,

b = R ^R- a\

68. Problem. Given the distance AC = c [Jig. 22) and the an- gle B A C ^ A, to find the radius R or deflection angle D of a curve, that fhall pass through C and the tangent point A.

Solution. Draw 0 E perpendicular to A C Then the angle AOE ^^A0C = BAC=A{(j2, III.), and the right triangle A OEgWos

(Tab.X.9)^0 = 3j^^i^;

R- ^^ Sin. A

To find Z), we have 9) sin. D = •nst found, we have sin. Z) = 50 -^•

^ . Substituting for R its value

he sin. A '

48 CIRCULAR CURVES.

c

Example. Given c = 2S5.t and ^l = 5°, to find R and D. Heix.

^, 142.7 ,^„,„ , . ^ iOOsin. 50 sin. 5-^

^' = ^75"^ = 163/. 3 ; and sin. D = -^g^- = 2So4 = s'"- ^ "^^

or D = 1 o 45'.

69. Problem. Given the radius R or the deJiecUon amjle D of a curve, and the angle B A C = A {Jig. 22), made by any chuid with the tangent at A^ to find the length of the chord A C ■= c.

he Solution. If R is given, we have 68) R = ^^— j ;

.- .c = 2 R sin. ,1.

Ti» -n, 1 ,, ^^v r> 100 sin. A n D IS given, we have 68) sin. D ^

100 sin. A c ==

sin. D

This formula is useful for finding tlic length of chords, when a curve is laid out by points two, three, or more stations apart. Thus, suppose that the curve ^ Cis four stations long, and that we wish to find the length of the chord A C. In this case the angle A = A D and c = 100 sin. 4 D

sin. D

Bv this method Table II. is calculated.

Example. Given R = 2455.7 or Z> = 10', and .1 = 40', to find c. Here, by the first formula, c =^ 4911.4 sin. 40' = 399.59.

,^ , , ^ , 100 sin. 43 40'

Isy the second formula, c gin \o iq' = 399.59,

70. ProblCDll. Given the angle of intersection K C B = 1 [fig. 23), and the distance CD = h from the intersection point to the curve in the direction of the centre., to find the tangent A C = T, and the radius A G = R.

Solution. In the triangle ^ D C we have sin. CA D : sin. A D C =^

CD: AC. Bnt CAD = ^AOD = ili^ 2, III. and VI.), and as

the sine of an angle is the same as the sine of its supplement,

sin. A D C == sin A D E = cos. DA E = cos 4 /. Moreover, CD

= b and A C = T. Substituting these values in the prectrding pro-

b cos, -^ ^ portion, we have sin. ^ I : cos. ^ I = b : T, or T = ^.^ \*j^ ; whence

(Tab. X. 33)

MISCELLANEOUS PROBLEMS.

19

^- T =h cot. \ I.

To find R, we have 5) R = T cot. ^ I. Substit iting for T ifc falue just found, wc have

^" R = b cot. ^ 7 cot. ^ 2

Fig. 23.

hxample. Given 7 = 30°, 6 = 130, to find Tan! R. Here

h = 130 ^7=7° 30'

7' = 987.45 17= 15°

72 = 368.5.21

2.113943 cot. 0.880571

2.994514 col. 0.571948

3.566462

7 1 . Problem. Given the angle of intersection KC B = 1 [Jig. 23 ).

%nd the tangent A C = T, or the radius A 0 = R, to find C D -^ b.

Solution. If T is given, we have 70) T = h cot. ^ 7, or 6 = T

lot i/'

.•.h= r tan. 17.

If R is given, we have 70) R = b cot. ^7 cot. |^7, or 6 R

eot ^ Jcot. i / '

.'.b = R tan. ;J 7 tan. ^ 7.

50

CIRCULAR CURVES.

Example. Given /= 27°, T= 600 or 7^ = 2499 lb, to fin.l I Here b = 600 tan. 45' = 71 01, or i = 2499.18 tan. 45 tan. 13° 30' = 71.01.

1

72. Problem. Given the angle of intersection I of two tangent A C and D C (fg. 24) to find the tangent point A of a curve, that shed pass through a point E, given by C D == a, D E =^ b, and the angle CD E

Eig. 24

Solution. Produce DE to the curve at G, and dra^7 C 0 to the cen- tre 0. Denote DFbyc. Then in the right triangle CDF we have (Tab. X. U) DF= CD cos. CDF, or

c = a cos.

Denote the distance A D from D to the tangent point by x. Then, by Geometry, x^ = D E X D G. But D G = D F -\- FG = DF + EF=2DF— DE = 2c b. Therefore, x^ = b{2c b), and

5^" x = ^b{2c b).

Having thus found A Z), we have the tangent AC = AD -{• DC = X -\- a. Hence, R ox D may be found (^ 5 or § 11).

If the point E is given by £^^and Ci/ perpendicular to each other, a and b may be found from these lines. For a = C H -\- DH ^

(75"+ JE;77cot. iZ(Tab. X. 9). and6 =^DE = ^^i-

MISCELLANEOUS PROBLEMS.

5i

Example. Given I = 20° 16', a = 600, and 6 = 80, to find x and H. Here c = 600 cos. 10° 8' = 59064, 2 c - 6 = 1101. 28, and x = ySO X 110^28 = 296.82. Then T = 600 + 296.82 = 896.82, and R = 896.82 cot. 10° 8' = 5017.82.

73. Problem. Given the tangent A C {Jig. 25), and the chora A By uniting the tangent points A and B, to Jind the radius A 0 -- R.

Fig. 25

Solution. Measure or calculate the perpendicular CD. Then if CZ) be produced to the centre 0, the right triangles AD C and CA 0, having th3 jungle at G common, are similar, and give CD : A D = AC: A 0, or

^^A^XAC CD

If it is inconvenient to measure the chord A B, a line E F, parallel to it, may be obtained by laying off from C equal distances CE and CF. Then measuring E G and G C, we have, from the similar tri-

GEXAC %ng\esE GCand CAO, CG:GE =AC:AO,orR= ^G *

Example. Given ^ C = 246 and AD = 240, to find R. Here

240 X 246 VD = 54, and R = - ^'^= 1093.33.

50

CIRCULAR CURVES.

Example. Given 7=27°, T = 600 or Here 6 = 600 tan. 45' = 71 01, or tan. 13° 30' = 71.01.

R = 2499 15, to an.! ( li = 2499.18 ti»n. 45

72. Problem* Given the angle of intersection / of two tangenti A C and B C {Jig- 24)^ to find the tangent point A of a curve, that ehaU pass through a point E, given by C D = a, D E =: b, and the angle CD E

= i/.

£ Ig. 'I

Solution. Produce DE to the curve at G, and draw C 0 to the cen- tre 0. Denote DFhyc. Then in the right triangle CDF we have (Tab. X. U) DF= CD cos. CDF, or

c = a COS. ^ I.

Denote the distance A D from D to the tangent point by x. Then, by Geometry, x^ = D E X D G. BntDG = DF-]-FG = DF-\- EF=2DF— DE = 2c b. Therefore, x^ = b{2c^ b), and

x = ^b{2c b).

Having thus found A Z), we have the tangent AC = AD -\- DC = x -{■ a. Hence, R or D may be found (^ 5 or ^ 11 ).

If the point E is given by JEJfTand Ci?^ perpendicular to each other, 0 and 6 may be found from these lines. For a = C H -\- D H

CH + EH cot. 1 1 (T.nb. X. 9). mdb=^DE

Hfi^

cV.

deproaaj]

"JT"-

Ifili.

EH

na<

^•.f.#.

>%%Jt.

MISCELLANEOUS PROBLEMS.

51

''■iiijai^

Example. Given I ^ 20° 16', a = 600, and 6 = 80, to find x and R. Here c = 600 cos. 10° 8' = 590.64, 2 c 6 = 1101. 28, and x = ySO^X^ 1101.28 = 296.82. Then T = 600 + 296.82 = 896.82, and R = 896.82 cot. 10° 8' = 5017.82.

73. Problem. Given the tangent A C {Jig. 25), and the chora A B, uniting the tangent points A and Z>, to Jind the radius A 0 ^ R.

Fig. 25

Solution. Measure or calculate the perpendicular CD. Then if C D be produced to the centre 0, the right triangles ADC and CA 0, having tho ^ngle at C common, are similar, and give CD : AD =■ AC'. A 0,0V

If it is inconvenient to measure the chord A B, a line E F, parallel to it, may be obtained by laying off from C equal distances CE and CF. Then measuring E G and G C, we have, from the similar tri- angles E GCand CA 0, C G : G E = A C: A 0, or R ^ ^^^g^

Example. Given ^ C = 246 and AD = 240, to find R. Here

240 y 246 CD = 54, and R = ~ ^^ = 1093.33.

52 CIRCULAR CURVES.

74. Problem. Given the radius AO = R [foj 25), to find :ht tangent A C = J- of a curve to unite two straight lines given on the ground

Solution. Lay off from the intersection C of the given straight lines any equal distances CL and CF. Draw the pe7-pendictdar C G to the mid- dle of E F, and measure G E and C G. Then the right triangles E G Cand C A 0, having the angle at C common, are similar, and give GE: CG = AO: AC, or

EF- r^__CGx AO

GE

By this problem and the preceding one, the radius or tangent points of a curve mav be found without an instrument for measuring angles.

Example. Given R = 1093|, G E = 80, and C G = 18, to find '/'.

18X1093^ Here F = gQ = 246.

75. Problem* To find the angle of intersection I of two straight lines, when the point of intersection is inaccessible, and to determine the tan- gent points, when the length of the tangents is given.

Solution. I. To find the angle of intersection i L.ct A C and C I' (fig. 26) be the given lines Sight from some point A on one line lo a point B on the other, and measure the angles CAB and T B V. These angles make up the change of direction in passing from one tangent to the other. But the angle of intersection 2) shows the change of di- rection between two tangents, and it must, therefore, be equal to the sum of C A B and T B V, that is,

t^ 1= CAB-^ TBV

But if obstacles of any kind render it necessary to pass from A C to B Fby a broken line, as A D E F B, measure the angles C A D, N D E, P E F, RFB, and S B V, observing to note those angles as mimts which are laid off contrary to the general direction of these angles. Thus the general direction of the angles in this case is to the right; but the angle P EF lies to the left oi D E produced, and is therefore to be marked minus. The angles to be measured show the successive changes of direction in passing from one tangent to the other. Thus C A D 6hov/s the change of direction between the first tangent and A D, ND E shows the change between A D produced and D E, P E F the change between DE produced and E F, R F B the change between £'F produced and FB, and, lastly, SB Fthe change between B F ])ro-

MISCELLANEOUS PROBLEMS.

53

duccd and the second tangent. But the iing^lc of intersection 2) shows the change of direction in passing from one tangent to another, and it must, therefore, be equal to the sum of the partial changes naeasuved, that is,

13^

/ = CA D -\- y DE - PEF-^ II FB + SB V.

Fig. 26

II. To determine the tangent points. This will be done if we find the distances .1 Cand B C; for then any other distances from Cmay be found. It is supposed that the distance A B, or the distances A Z), DE, E F, and FB have been measured.

Tf one line A B connects A and B. Jind A C and B C in the triangle ABC. For this purpose we have one side A B and all the angles.

Jf a broken line A D E F B connects A and B, let fall a perpendicular B G from B upon A C, produced if necessary, and find A G and B Q hy the usual method of working a traverse. Thus, if A C is taken as a meridian line, and D /v, E L, and FM are drawn parallel to A C, and D H, E K, and FL are drawn parallel to B G, the difference of lati- tude A G is equal to the sum of the partial differences of latitude A H. D K, EL, and FM, and the departure B G h equal to the sum of the partial departures D II, E K, F L, and B HI. To find these partial differences of latitude and departures, we have the distances A I), DE, E F, and F B, and tiie bearings may be obtained from the angles already measured. Thus the bearing of yl Z) is C A D, the bearing of DE is KDE = KDN+ NDE =^ C A D -\- NDE, the bearing of jB F is LEF = LEP— PEF^ KDE— PEF, &nA the

54

CIRCULAR CURVES.

bearing oi F B is MFB = MFR -{- RFB=^ LEF + RFB; that is, the bearing of each line is equal to the algebraic sum of the preced ing bearing and its own change of direction. The differences of lati- tude and the departures may now be obtained from a traverse table, or more correctly by the formulis :

DiiF. of lat. = dist. X cos. of bearing ; dep. = dist. X sin. of bearing

Thus, AH= AD cos. CAD, and DU=AD sin. CA D.

Having found A G and B G, we have, in the right ti'iangle B G C,

(Tab. X. 9) GC = B G cot. B C G, and BC = ^^^-q But BCG=180° I. Therefore, cot. BCG = cot. /, and sin.BCG = sin. /. Hence G C =- B G cot. 7, and BC = ^^^77 . Then, since A C = A G -\- G C, we have

AC=AG BG cot. /;

BC

BG

sm.

When /is between 90° and 180°, as in the figure, cot. /is negative, and B G cot. I is, therefoi-e, positive. When / is less than 90°, G will fall on the other side of / ; but the same formula for A C wil still apply ; for cot. / is now positive, and consequently, B G cot. / is negative, as it should be, since, in this case, A C would equal A G mi mis G C.

Example. Given A D = 1200, DE = 350, E F ==^ 300, F B =^ 310, CAD== 20°, NDE = 44°, PE F =. 25°, R FB = 31°. and SB V ^ 30°, to find the angle of intersection /, and the distance? A C and B C.

Here 7 = 20° + 44° 25° + 31° + 30° = 100°. To find A G and B G, the work may be arranged as in the following table :

Angles to the Right.

Bearings.

Distances.

N.

£.

0 20

44

—25

31

N. 20 E. 64 39 70

1200 3.50 300 310

1127.63 153.43 233.14 106.03

410.42 314.58

188.80 291.30

1620.23

1205.10

The first column contains the observed angles. The second contains the bearings, which are found from tne angles of the first column, iv

MISCELLANEOUS PROBLEMS.

55

the manner already explained. A Cis considered as running north from A, and the bearings are, therefore, marked N. E. The other col- umns require no explanation. "We find A G = 1620.23, and B G = 1205.10. Then GC = BG cot. I = 1205.1 X cot. 100° =- 212.49. This value is positive, because it is the product of two nega- tive factors, cot. 100° being the same as —cot. 80°, a negative quanti- ty. Then AC= AG + GC= 1620.23 + 212.49 = 1832.72, and

BC = -. ^bn = 1223 69. Having thus found the distances of A sin. 1UU-' °

and B from the point of intersection, we can easily fix the tangent points for tangents of any given length.

76. Problem. To Uuj out a curve, when an obstruction of any kind prevents the use of the ordinarij methods.

^ig. 27

Solution. First Method. Suppose the instrument to be placed at A (fig. 27), and that a house, for instance, covers the station at B, and also obstructs the view from A to the stations at D and E. Lay off from A C, the tangent at yl, such a multiple of the deflection angle Z), iis will be sufficient to make the sight clear the obstruction. In the figure it. is supposed that 4 Z) is the proper angle. The sight will then pass through F, the fourth station from A, and this station will be de- termined by measuring from A the length of the chord A F, found by

56

CIRCULAR CURVES.

§ 69 or by Table II. From the station at i^ the stations at D and E may afterwards be fixed, by laying off the proper deflections from the tangent at F.

Second Method. This consists in running an auxiliary curve paral lei to the true curve, either inside or outside of it. For this purpose lay off perpendicular to A C, the tangent at A, a line A A' of any con venient length, and from A' a line A' C parallel to A C. Then A' C' is the tangent from which the auxiliary curve A< E' is to be laid off. The stations on this curve are made to correspond to stations of 100 feet on the true curve, that is, a radius through B' passes through Zj, a radius through D' passes through D, &c. The chord .4' B' is, tlicre- fore, parallel to A B, and the angle C A' B' = CAB; tliat is, the de- flection angle of the auxiliary curve is equal to that of the true curve It remains to find the length of the auxiliary chords A' B', B' D', &c Call the distance A A' = h. Then the similar triangles ABO and A' B> 0 give A 0 : A' O = A B : A' B', or R : R b = 100 : A' B>.

Therefore A< B< - ^^^<^~'^ _ i no ^^^ * tp .i -r

j-ueicrore, ^ ij ^ = 100 ^ . If the auxihary curve

were on the outside of the true curve, we should find in the same way

.-l' B' ^ 100 4- -^ . It is well to make h an aliquot part of R ; foi the auxiliary chord is then more easily found. Thus, if n is anv

whole number, and we make 6 = - , we have A' B' = 100 ± ^%^

= 100 ± . If, for example, ^ = Jq^ , we have ?? = 100, and .1 ' B

= 100 ± 1 = 101 or 99. When the auxiliary curve has been run, the corresponding stations on the true curve are found, by laying off in the proper direction the distances B B', D D', &c., each equal to b.

77. Proljlcm. Having run a curve A B [Jig. 28), to change the tangent point from A to C, in such a way that a curve of the same radius may strike a given point D.

Solution. Measure the distance B D from the curve to D in a direction parallel to the tangent C E. This direction may be sometimes judged of by the eye, or found by the compass. A still more accurate way is to make the angle DBE equal to the intersection angle at E, or to twice BAE, the total deflection angle from A to B; orif^ can be seen from B, the angle DBA may be made equal to BAE.

Measure on the tangent (backward or forivard, as the case may be) a dis lance A C B D, and C will be the 7iew tangent point required. For. if rfl"be drawn equal and parallel to A F, we have Fi7 equal and par

MISCELLANEOUS PROBLEMS. 5/

uUel to AC, and therefore equal and parallel to B D. Hence D H == B F.= AF= CH, and D /7 being equal to C H, a. curve of radios 07 i^ from the tangent point C must pass through D.

78 ProblenB. Having run a curve A B (Jig. 29) of radius li <n deflection angle Z>, terminating in a tangent B D, to Jind the radius IV or deflection angle D' of a curve A C, that shall terminate in a given parallel tangent CE.

Fig. 29.

A K

iSolution. Since the radii Z? F and CG are perpendicular to the par- allel tangents CE and B L>, they are parallel, and the angle A GG = Therefore, A C G, the half-supplement of A G C, is equal 4

4.Fb

m

CIRCULAR CURVES.

A B F, the half-supplement of A F B. Hence A B and B C are in the same straight line, and the new tangent point C is the intersection ol A B produced with C E.

Represent AB by c, and A C = c -\- B C by c'. Measure B C, or, if more convenient, measure D C and find B C by calculation. To calculate

D C

B C from D C, we have B C =^ ^-^^ j^^^ (Tab. X. 9), and the angle

DBC = ABK= BAK, the total deflection from .4 to B. Then

the triangles AFBandAG C give A B : AC = BF : C G,oy c : c'

= R:R';

,'.R' = -R. c

50

50

Sub-

To find Z)', we have 10) /vl' = ^^^, , and R = ^^^ - sdtuting these values in the equation for R', we have gj^ jy, =

50

TX

50 sin. D '

. sin. D' = -, sin. D.

79. Problem. Given the length of tico equal chords A C and B C [Jig. 30), and the perpendicular CD, to find the radius R of the curve.

Fig. 30

Solution. From 0, the centre of the curve, draw the perpendicular OE. Then the similar triangles QBE and BCD give B 0 : B E ^ BC: CD.orR:hBC=E C: CD. Hence

7? =

BC^ 2 CD

MISCELLANEOUS PROBLEMS.

59

This problem serves to find the radius of a curve on a track already laid. For if from any point C on tlie curve we measure two equal .-hords .1 Cand B C, and also the perpendicular CD from Cu2)on the whole chord A B, we have the data of this problem.

80. Prot>l.(3lll. To draw a tangent F G {Ji<j. 30) to a given curve from a given point F.

Solution. On any straight line F/1, ichich cuts the curve in two points, measure F C arid FA, the distances to the curve. Then, by Gcometrv,

FG =yFCx FA.

This length being measured from F, will give the point G. When FG exceeds the length of the chain, the direction in which to measure it, so that it will just touch the curve, may be found by one or two trials.

8\. Problem. Having found the radius A 0 ^ E of a curve (fg. 31 ), to substitute for it tico radii A E = R^ and D F = A'o , (he, 'ongcr of vhich A E or B E ' is to be used for a certain distance only ai mrh end of the curve.

>Jolution. Assume the longer radius of any length ivhich mat/ be thought

60 CIRCULAR CURVES.

proper, and find 9) the corresponding deflection angle D^. Suppose that each of the curves A D and B D' is 100 feet long. Then drawing CO, we have, in the triangle FOE,OE:FE = s'm.OFE : sin. FOE. But the side OE = AE— AO = Ri R, F E = D E D F == Z?i /?<. , the angle FOE = \S0° A 0 C ^ 1 80° i /, and the angle 0FE=A0F— 0EF=^I-2Di, since 0 E F = 2 D, 7). Substituting these values, and recollecting that sin. (180° ^7) = sin. ^ /, we have R^ R\R^ R. = sin. (i / 2 Z), ) : sin. ^ 1 Hence

' sin.(i7-2Z)J

^2 is then easily found, and this will be the radius from D to D\ or until the central angle DFD' = I— 4 D^.

The object of this problem is to furnish a method of flattening the extremities of a sharp curve. It is not necessary that the first curve should be ju'st 100 feet long ; in a long curve it may be longer, and in a short curve shorter. The value of the an^le at E will of course change with the length of A D, and this angle must take the place of 2 Di in the formula. The longer the first curve is made, the shorter the second radius will be. It must also be borne in mind, in choosing the first radius, that the longer the first radius is taken, the shorter will be the second radius.

Example. Given R 1146. 28 and 7= 45°, to find i?2> if ^i is as- sumed = 1910.08, and A D and B D> each 100. Here, by Table I., Dj = 30'. Then

A', —R = 763.8 2.8829S0

i / = 22° 30' sin. 9..582840

2.465820 i/— 2D,-= 19° 30' sin. 9.523495

Ri R^ = 875.64 2.942325

.-. /?2 = 72i 875.64 = 1034.44

82. Problem. To locate the second brcrch of a compound or re- versed curve from a station on the first branch.

Solution. Let J. B (fig 32) be the first branch of a compound curve^ and D its deflection angle, and let it be required to locate the second branch AB\ whose deflection angle is Z)', from some station B unA B.

MISCELLANEOUS PROBLEMS. 61

Let n be tfie number of stations from A to B, and n' the number of sta- lions from A to any station B' on the second branch. Represent by Vtht %ngle A B B', which it is necessary to lay off from the chord B A to strike B>. Let the correspondinj:; ande A B' B on the other curve be repre-

Fig. 32

rented by V. Then we have F+ F' = 180° BAB'. But if T T' be the common tangent at A, we have TA B + T' A B' = nD J^ n' D' = 180° BAB'. Therefore, V-{- V = nD -{• n' D'. Next in the triangle AB B' we have sin. V : sin. V= AB : AB'. But A B : A B' = n :n', nearly, and sin. V : sin. V = V : V, near-

n

ly. Therefore we have approximately F' : F = n : n', or F' = -, F.

Substituting this value of F' in the equation for F+ F', we have r+ J V=nD-\-n'D'. Therefore, n' F+ n F= ?i' (nZ) + n'Z)'), or

n -\- n'

The same reasoning will apply to reversed curves, the only change being that in this case F+ V = nD n' D', and consequently

V= ^' i»^ ^'D')

n -{• n'

When in this formula n' D' becomes greater than n D, V becomes minus, which signifies that the angle Fis to be laid off above B A in- stead of belov/.

This problem is particularly useful, when the tangent point of a curve is so situated, that the instrument cannot be set o\cr it. The same method is applicable, when the curve A B' starts from a straight line ; for then we may consider A B' as the second branch of a com- pound curve, of which the straight line is the first branch, having its radius equal to infinity, and its deflection angle D = 0. Making D = 0, the formula for F becomes

62

CIRCULAR CURVES.

n -\- )i'

When n and 71' are each 1, the formula for Fis in all cases exact, for then the supposition that V : V = 71 : n' is strictly true, since AB will equal A B', and Fand F', being angles at the base of an isosceles triangle, will also be equal. Making n and 71' equal to 1, we have

When the curve starts from a sti-aight line, this formula becomes, by making Z) = 0,

We have seen that when n or n' is more than 1, the value of Fis only approximate. It is, however, so near the truth, that when nei- ther n nor n' exceeds 3, the error in curves up to or varies from a fraction of a second to less than half a minute. The exact value of F might of course be obtained by solving the triangle ABB', in which the sides AB and AB' may be found from Table II., and the included angle at A is known. The extent to which these formnlte may be safely used may be seen by the following table, which gives the approximate values of Ffor several different values of n,n',D^ and />', and also the error in each case.

Compound Curves.

Reversed Curves.

n.

D.

0

n".

D'.

0

V.

Error.

n.

D.

0

«'.

0

V.

Error.

0 ;

i\

0 1

n

1

0

5

1

4 10

0.9

1

3

4

3

7 12

27.2

1

0

5

3

12 30

25.3

2

3

4

3

4 0

23.5

2

0

3

3

5 24

22.1

3

3

4

3

1 42f

8.3

3

0

3

3

4 30

29.7

3

h

0

3

3 45

24.0

1

1

5

3

13 20

18.6

2

I

1

4

0 40

O.I

2

1

2 9

1

3

1 20

0.7

2

1

4

9

4 0

11.0

2

3-

3

7 48

15.0

1

6

2

6

4 0

23.5

0

2

4

3

10 40

24.7

1

5

3

5

7 .'U)

51.8

3

3

3

4

10 30

54.0

2

3

5

3

0 25f

52.8

As the given quantities are here arranged, the approximate values of Fare all too great ; but if the columns n and n' and the columns D and D' were interchanged, and F calculated, the approximntc values of F would be just as much too small, the column of cnoi> rcniaiuing the same.

MISCELLANEOUS PROBLEMS.

63

83. Problem. To measure the distance across a river on a given Uraight line.

D

Fig. 3.3.

Solution. First Method. Let A B (fig. 33) be the required distance Measure a line A C along the bank, and take the angles B A C and ACB. Then in the triangle ^1 C Cwe have one side and two angles

to nnd A B.

1( A Cis of such a length that an angle A C B = ^D A C can he laid off to a point on the farther side, we have ABC=^DAC=^ ACB. Therefore, without calculation, AB = AC.

Fig. 34.

Second Method. Lay off ^ C (fig. 34) perpendicular to A B. Meas- ure xi C, and at Clay off CZ) perpendicular to the direction CB, and meeting the line of /I B in D. Measure A D. Then the triangles A CD and ABC are similar, and give AD : A C =- A C : AB.

Therefore, AB ^ -^ .

If from C, determined as before, the angle A C B' be laid off equal to yl CB, we have, without calculation, A B = AB'.

Third Method. Measure a line A D (fig. 35) in an oblique direction from the bank, and fix its middle point C From any convenient point E in the line of A B, measure the distance E C, and prodiue

64

MISCELLANEOUS PR0BLE3IS.

E C until CF= Ea Then, since the triangles A CE and D CF are similar by construction, we see that DF is parallel to E B. Find

Fig. 35

now a point G, that shall be at the same time in the line of CB and of D F, and measure G D. Then the triangles ABC and D G C sre equal, and G D is equal to the required distance A B.

As the object of drawing E Fis to obtain a line parallel to A B, this line may be dispensed with, if by any other means a line GFhe drawn through D parallel to AB. A point G being found on this parallel in the line of C B, we have, as before, GD = AB.

PARABOLIC CURVES.

65

CHAPTER II.

PARABOLIC CURVES. Article I. Locating Parabolic Curves.

84. Let AEB (fig. 36) be a parabola, A C and B C its tangents, iiid .1 B the chord uniting the tangent points. Bisect A B in D, and oin CD. Then, according to Analytical Geometry,

Fig. 36.

L CD is a diameter of the parabola, and the curve bisects CDinE-

II. If from any points T, T', T", &c., on a tangent A F, lines be a.-awn to the curve parallel to the diameter, these lines T M, T' M , 1 "M" &c., called tangent deflections, will be to each other as the Benares' of the distances AT, A T>, A T'\ &c. from the tangent

ptint A.

III. A line F D (fig. 37), drawn from the middle of a chord A Bio the curve, and parallel to the diameter, may be called the middle ordi nate of that chord ; and if the secondary chords A E and B E he drawn, the middle ordinates of these chords, K G and /. H. are each equal to {ED. In like manner, if the chords A A', KE,EL, and LB he drawn, their middle ordinates will be equal to \KG or \L H.

\V. K tangent to the curve at the extremity of a middle ordinate, is parallel to the chord of that ordinate. Thus MF, tangent to the cur\ e at E, is parallel to A B.

rs

PARABOLIC CURVES.

V. If any two tangents, as yl C and B C, be bisected in M and / ihe line il/F, joining the points of bisection, will be a new tangent, ita middle point E being the point of tangency.

85. I*rol>leill. Given the tangents A C and B C, equal or unequal^ {Jig. 36,) and the chord A B, to lay out a parabola hy tangent deflections.

Fig. 36

Soluticm. Bisect A B in A and measure CD and the angle A CD^ or calculate CD* and A CD from the original data. Divide the tan- gent A C into any number n of equal parts, and call the deflection JM/for the first point a. Then 84, II.) the deflection for the sec- ond point will be T' M' = 4 a, for the third point T" M" = 9 a, and 60 on to the nth point or C, where it will be n^a. But the deflection at this last point \sGE = ^CD{^ 84, I). Therefore, n^ a = C E. and

CE

a =

n*

Having thus found a, we have also the succeeding deflections 4 a, 9 a. 16 a, &c. Then laying ofl^ at T, T', &c. the angles A T M, A T' M>, &c. each equal to A CD, and measuring down the proper deflections, just found, the points M, il/', &c. of the curve will be determined.

The curve may be finished by laying off on -4 C produced n parts equal to those on A C, and the proper deflections will be, as before, a multiplied by the square of the number of parts from A. But an

* Since C D is drawn to the middle of the base of the triangle ^ iS C, we have, hj Rwmetrj-, C D'^ = ^ (A C^ + B C^) A D"-.

LOCATING PARABOLIC CURVES.

67

PaMcr way generally of finding points beyond E is to divide the sec- ond tangent B Cinto equal parts, and proceed as in the case of ^ I. If the number of parts on B C be made the same as on A (7, it is obvi- ous that the deflections from both tangents will be of the same length for corresponding points. The angles to be laid off from B C must,

Df course, be equal to BCD.

The points or stations thus found, though corresponding to equal distances on the tangents, are not themselves equidistant. The length of the curve is obtained by actual measurement.

86. Problem. Given the tangents A C and B C, equal or unequal, [fig. 37,) and the chord A B, to lay out a parabola by middle ordinates.

Solution. Bisect A B in D, draw CD, and its middle point E will oe a point on the curve 84, L). D E is the first middle oi^.nate, and its length may be measured or calculated. To the point E draw t>-.e chords A E and BE, lay off the second middle ordinates G K and HL, each equal to \DE{^ 84, III), and K and L are points on the curve. Draw the chords A K, K E, E L, and L B, and lay oft third middle ordinates, each equal to one fourth the second middle ordi- nates, and four additional points on the curve will be determined. Continue this process, until a sufficient number of points is obtained

87. Prol>leiIl. To draiv a tangent to a parabola at any station.

Solution. I. If the curve has been laid out by tangent deflections (^ 85). let M"' (fig. 36) be the station, at which the tangent is to be drawn. From the'' preceding or succeeding station, lay off, parallel to CD, a distance M"NoxEL equal to a, the first tangent deflection 85), and M'" N or M'" L will be the required tangent. The same thing may be done by laying off from the second station a distance j^, 7^/ ^ 4 or at the third station a distance GP = ^a; for the

BS PARABOLIC CURVES.

required tangent will then pass through T' or G. It will be seen, also, that the tangent at M'" passes through a point on the tangent at A corresponding to half the number of stations from A to 31'" ; that is, M'" is four stations from A, and the tangent passes through T', the second point on the tangent A C. In like manner, M'" is six sta- tions from Z?, and the tangent passes through G, the third point on the tangent B C

II. If the curve has been laid out by middle ordinates 86), the tan- gent deflection for one station is equal to the last middle ordinate made use of in laying out the curve. For if the tangent A C (fig. 37) were divided into four equal parts corresponding to the number of stations from A to E^ the method of tangent deflections would give the same points on the curve, as were obtained by the method of § 86. In this case, the tangent deflection for one station would be a =^ i\ C E ^ jg DE., but the last middle ordinate was made equal to ^ G K or ie D E. Therefore, a is equal to the last middle ordinate, and a tan- gent may be drawn at any station by the first method of this section.

A tangent may also be drawn at the extremity of any middle ordi- nate, by drawing a line through this extremity, parallel to the chord of that ordinate 84, IV.).

88. In laying out a parabola by the method in § 85, it may some- times be impossible or inconvenient to lay off all the points from the original tangents. A new tangent may then bo drawn by § 87 to any station already found, as at M'" (fig. 36), and the tangent deflections a, 4 a, 9 a, &c. may be laid off from this tangent, precisely as from the first tangent. These deflections must be parallel to CD, and the dis- tances on the new tangent must be equal to 7'' iV or iViV", which may be measured.

89. Problem. Giveii the tangents A C and B C, equal or uneqiml, [Jiy 38,) to lay out a parabola by bisecting tangents.

Solution. Bisect A C and B C in D and F, join D F, and find £", the middle point of D F. E will be a point on the curve 84, V.). We have now two pairs of what may be called second tangents, A D and I) E, and E F and F B. Bisect A Din G and D E in H, join G H, and its middle point ilf will be a point on the curve. Bisect £" F and F Bin K and L, join KL, and its middle point iVwill be a point on the curve. We have now four pairs of third tangents, A G and G M, M H and U E, E K and KN, and N L and L B. Bisect each pair in turn, join the points of bisection, and the middle points of the joininj;

LOCATING PARABOLIC CURVES.

69

lines will be four new points, il/', M", iV", and N'. The same methcx? may be continued, until a sufficient number of points is obtained.

Fig. 38.

90. Problem. Given the tangents A C and B C, equal or unequal Hg. 39,) and the chord A B, to lay out a parabola by intersections.

Fig. 39

Solution. Bisect A B in D, draw CD, and bisect it in E. Divide the tangents A Cand B C, the half-chords A D and D B, and the line CE, into the same number of equal parts ; five, for example. Then the intersection M of A a and F G will be a point on the curve. For FM = I Ca, and Ca = i CE. Therefore. FM= 55 CE, which is the proper deflection from the tangent atFto the curve 8.5). In like manner, the intersection N of Ab and II K may be shown to be a point on the curve, and the same is true of all the similar intersections indicated in the figure.

If the line DE were also divided into five equal parts, the line A a would be intersected in il/on the curve by a line drawn from B through a', the line A b would be intersected in iVon the cur\'e by a line drawn

70

PARABOLIC CURVES.

from B through 6', and in general any two lines, drawn from A and B through two points on CD equally distant from the extremities Cand D, will intei-sect on the curve. To show this for any point, as x)/, it is sufficient to show, that B a' produced cuts F G on the curve ; for it has already been proved, that A a cuts F G on the curve. Now Da':MG^BD:B G = b:^,or M G =lDaK But Da' = \ C E. Therefore, MG = h C E. Again, F G : CD =^ A G : A D = I ■:>. Therefore, FG = \CD = lCE. We have then FM = F G MG = f CE ii C E = is C E. As this is the proper deflection from the tangent at F to the cm-ve 85), the intersection of B a' with F G is on the curve. This furnishes another method of laying out a parabola by intersections.

91. The following example is given in illustration of several of the preceding methods.

Example. Given AC = B C ^ 832 (fig. 40), and -1 B = 1536 to lay out a parabola A E B. We here find CD = 320. To begin with the method by tangent deflections 85), divide the tangent A C into

C E ^(\0

eight equal parts. Then a = —^ = -wr = 2.5. Lay off from the

divisions on the tangent Fl = 2.5, G2 =4 X 25 = 10, ^3 = 9X25 = 22.5, and /v 4 = 16 X 2.5 = 40. Suppose now that it is inconvenient to continue this method beyond K. In this case we may

Fig. 40

find a new tangent at E, by bisecting A Cand B C {^ 89), and draw- ing KL through the points of bisection. Divide the new tangent KE =^ ^ AD ^ 384 into four equal parts, and lay oflT from KE the

RADIUS OF CURVATURE.

71

same tangent deflections as were laid off from .fi iiT, namely, 3/5 - 22.5 A^6 = 10, and 07 = 2.5. To lay off the second half of the curve by middle ordinates (§86), measure EB= 784.49. Bisect EB in P, and lay off the middle ordinate P R = ^D E ^ AQ. Measure ER^ 386.08, and BR = 402.31, and lay off the middle or- dinates S T and V IF, each equal to ^ P /2 = 10. By measuring the chords ET, TR, R TF, and WB, and laying off an ordinate fron' each, equal to 2 5. four additional points might be found.

Article II. Radius of Curvature.

92. The curvature of circular arcs is always the same for the same arc, and in different arcs varies inversely as the radii of the arcs. Thus, the curvature of an arc of 1,000 feet radius is double that of an arc of 2,000 feet radius. The curvature of a parabola is continually changing. In fig. 39, for example, it is least at the tangent point A, the extremity of the longest tangent, and increases by a fixed laAv, un- til it becomes greatest at a point, called the vertex, where a tangent to the curve would be perpendicular to the diameter. From this poin; to B it decreases again by the same law. We may, therefore, con- sider a parabola to be made up of a succession of infinitely small cir- cular arcs, the radii of which continually increase in going from the vertex to the extremities. The radius of the circular arc, correspond- ing to any part of a parabola, is called the radius of curvature at that

point.

If a parabola forms part of the line of a railroad, it will be necessa- ry, in order that the rails may be properly curved 28), to know how the radius of curvature may be found. It will, in general, be necessary to find the radius of curvature at a few points only. In short curves it may be found at the two tangent points and at the mid- dle station, and in^onger curves at two or more intermediate points besides. The rails curved according to the radius at any point should be sufficient in number to reach, on each side of that point, half-way to the next point.

93. Problem. To find the radius of curvature at certain stations

on a parabola.

Solution. Let AEB (fig. 41) be any parabola, and let it be re- quired to find the radii of curvature at a certain number of stations

72

PARABOLIC CURVES.

fron. A to E. Tliese stations must be selected at regular interral from those determined by any of the preceding methods. Let n de note the number of parts into which ^ £ is divided, and divide CL into the same number of equal parts. Draw lines from A to the points

of division. Thus, if n 4, as in the figure, divide CD into four equal parts, and draw A F, A E, and A G. Let A D = c^ A F = Ci A E = C2, A G C3, and A C = T. Denote, moreover, C D hy d and the area of the triangle A C B hy A. Then the respective radii for the points .£,1,2, 3, and A will be

R = 2, /?, =

A

II

V2

A

A*3

A '

Ra =

A

The area A may be found by form. 18, Tab. X.; c and T are known ; and Ci, Co, c^ may be found approximately by measurement on a figure carefully constructed, or exactly by these general formulae :

&c.

7^2 _c2 {n~\)d^

n

f2

c2

n

j'i

C2

n

'fi

c2

n'

[n

-3)

d^

n2

[n

-5)

f/2

n2

[n_

-7)

«2

d^

&c.

It will be seen, that each of these values is formed from the preceding, by adding the same quantity - , and subtracting ^ multiphed in STiccess-lorj hr w 1, n - Z -n - 5, v^ ^flaking: ^> ~ i, we have

RADIUS OF CURVATUKb.

ra

c^^ = c^ 4-^(r2_c«)-i'gcr',

C2'' = c,^-hUT'-c-')-ud\

Ca^ = c

i' -\- ^ {T^ - c'') + ud'.

A.11 the quantities, wliicb enter in* j tlic expressions for the radii, are now known, and the radii may, therefore, be determined. The same method will apply to the other half of the parabola.

The manner of obtaining the preceding formulte is as follows. The radius of curvature at any given point on a parabola is, by the Differ- ential Calculus. R = 2^i^^.3 E ' ^" which p represents the parameter of I lie parabola for rectangular coordinates, and E the angle made with a diameter by a tangent to the curve at the given point. First, let the middle station E (fig. 42) be the given point. Then the angle E is the

Fig. 42

angle made with E Dhy n tangent at E, or since A B is parallel to the tangent at E 84, IV.), sin. E = sin. ADE = sin. BDE. Let p' be the parameter for the diameter E D. Then, by Analytical Ge

ometry, f

p' 8in.2 E 2 8in.3 E ^ c3

p' sin 2 E. Therefore, at this point R =

2 8in.3 E ~ 2sihE ^^^ P'-^^ = Vd' Therefore, R = j^

--= . . = : since A ^^ cd sin. E (Tab. X. 17). c d sin. E A ^ ^ '

Next, to find 7?i , or the radius of curvature at H, the first station from E. Through ff draw EG parallel to CD, and from Fdraw the tangent EK. Join A K, cutting C Dm L. Then from what has just been pioved for the radius of curvature at E, we have for the radius

of curvature at //. A', = a F K' ^^^^ A G A L = A F : A C =

74

PARABOLIC CURVES.

n~ I : n, or A G = - ~ x A L. But A L = c, For, Miice A F - —^ X AC, the tangent deflection FH = ^" ~/^" . ^ 84, II.), and FG = 2FH=^-^^^^d. Then, since CL:FG = AC:AF =

n:n-l,CL = ^^X FG='^d. Hence L D = d - '^ d = - c7, thut is, .1 L = Ci . Substituting this value in the expres- sion for A G above, we have A G = -^— c^ . Moreover, since A F = - X A C, a/id because similar triangles are to each other a? the squares of their homologous sides, we have the triangle A F G = ^" ~ ^^' X A CL. But ACL:ACD=^CL:CD = n l: n, or ACL=^ "^ X A CD. Therefore, A F G '= ^-^^^~^ X A C D, and

AFK = 2AFG = ^^^^^ XACB = ^^.'^ A. Substituung these values of A G and A F K in the equation R^ = j^p^ , and re- ducing, we find 7?j = . By similar reasoning we should find /?2 =

It remains to find the values of Cj , c. , &c. Through A draw J ili pei-pendicular to CD, produced if necessary. Then, by Geometry, we have AD"^ = A L" + L D" 2 L D X LM, and AC = A L^ -{- CU + 2 CL X L M. Finding from each of these equations the value of 2 L M, and putting tliese values equal to each other, we have

zT^ = CL ^"^ AL = Ci,LD=-d,

n 1

A D = c, A C =^ 2\ and CL = -^ d. Substituting these values

in the last equation, and reducing, we find

r^ l)c2 [n \)d^

^^ - » + n ~ n^

By similar reasoning we should find

2 7^2 (u 2)c2 2{n 2)d

«

c,^= -:r +

s

n n n

3 (tt 3)c« 3(n airf"

&c. &c.

RADIUS OF CURVATURE.

75

From tlicsc equations the values of c,S Co', Cj"^ , &c. given on page 72 arc readily obtained. That given for Cj' is obtained from the first ol these equations by a simple reduction ; that given for Cj- is obtained by subtracting the first of these equations from the second, and reduc- ing ; that given for c^^ is obtained by subtracting the second equation from the third, and reducing ; and so on.

94. Example. Given (fig. A\) A C ^ T ^ 600, B C == T< ^ 520, and AD = c = 550, to find R, R^ , H, , R3 , and R^ , the radii of cur- vature at .E, 1 , 2, 3, and A.

To find CD = d, we have, by Geometry, d^=^[T- -{- 7'' ^j

which gives d- = 12700. To find the area of .1 CB = A, we have (Tab. X. 18) A =

./sis —a) (s —6) is—c) .

*^ ^ ' s = 1110 3.045323

c a = 590 2.770852

s 6 = 510 2.707570

s c = 10 1.000000

2)9.523745

lojr. A 4.761872

■'to

Next ^ (r^ - 0') = i (r + c) (r- c) = ii5!^ = 14375, and t „lf «L = 793.75. Then

•* lb

c^ = 550- = 302500

Cj^ = 302500 + 14375 3 X 793.75 = 314493.75

Co^ == 314493.75 + 14375 793.75 = 328075

C32 = 328075 + 14375 + 793.75 =- 343243.75

C3

To find /?, we have /2 = ^ , or log. R = 3 log. c log. A.

c = 550 2.740363

c^ 8.221089

A 4.7618^

22 = 2878.8 3.459217

To find Rj, , we have Ri == ^ > or log. Ri =-2-log Cj^ log. A.

Cj^ = 314493.75 5.49761

c,3 8.246418

A 4.76 872

i?, == 3051.7 3.484546

76 PARABOLIC CURVES.

In the same way we should find i?2 = 3251.5, R^ = 3479.6, R^ ^ 3737.5.

To find the radii for the second part E B o( the parabola, the same formulse applv, except that T' takes the place of T. We have then

l(r- - c',"= UT' + c) ,r - 0 = 15™^^ = _su.5

Hence

Ci*'' = 302.500 S025 2381.25 = 292093.75 C2^ = 292093.75 8025 793.75 = 283275. C32 = 2S3275 8025 + 793.75 := 276043.75

C 3 3

To find Ri , we have /?i = -y , or log. Ri = 5 log Ci"-' log. A

c 2 = 292093.75 5.465523

c^ 8.198284

A 4.761872

/?, = 2731.6 3.436412

In the same way we should find R<i_ = 2608.8, R^ = 2509.5, R^ -=> 2433.

It will be seen, that the radii in this example decrease from one tan- gent point to the other, which shows that both tangent points lie on the same side of the vertex of the parabola 92). This will be tho case, whenever the angle BCD, adjacent to the shorter tangent, ex- ceeds 90°, that is, whenever c' exceeds T'^ -\- d}. If B CD = 90°. the tangent point B falls on the vertex. If BCD is less than 90°, one tangent point falls on each side of the vertex, and the curvature will, therefore, decrease towards both extremities.

95. If the tangents T and T' are equal, the equations for c,', Co', &c. will be more simple; for in this case d is perpendicular to c, and T' c^ = d^. Substituting this value, we get

d^

3d^ Co = Cj -4- -^ ,

5d^

&C. &C.

example. Given, as in § 91, T ^ T' = 832, c = 768, and d =

RADIUS OF CURVATURE.

n

320, to find the radii /?, Ri , and R^ at the points E, 4, and A (fig. 40) Here A = cd = 245760, n = 2, and c,' = c^ + |£/2 = 615424

c3 c2 7G82 _ C,3

Then /? ^. ^

C2 7G82 C,3 . _ r3

^' '''i = 75 ' ''""

c,2 = 615424

5.789174

cd = 245760

8.683761 5.390511

/?! = : 964.5 r= 832

3.293250 2.920123

23

erf = 245760

8.760369 5.390511

R.. = 2343.5

3.369858

W is the radius at the point R also, and 7?, the radius at the point B

78 LEVELLING.

CHAPTER IIL

LEVELLING.

Article I. Heights and Slope Stakes.

96. The Level is an instriiinent consisting essentially of a telesco]>e. .supported on a tripod of convenient lieight, and capable of being so adjusted, that its line of sight shall be horizontal, and that the tel- escope itself may be turned in any direction on a vertical axis. The instrument when so adjusted is said to be set.

The line of sight, being a line of indefinite length, may be made to describe a horizontal plane of indefinite extent, called the plane of Om lei-el.

The levelling rod is used for measuring the vertical distance of any point, on which it may be placed, below the plane of the level. Thi? distance is called the sight on that point.

97. Pro1>lcill. To Jind the difference of level of two points, as A and B [fig. 43).

Solution. Set the level between the two points,* and take sights on both points. Subtract tlie less of these siglits from the greater, and the difference will be the difference of level required. For i( F P rep- resent the plane of the level, and A G he drawn through ^4 parallel to FP, A F will be the sight on A, and B P the sight on B. Tiien the required difference of level B G = BP - ^^G = BP AF.

If the distance between the points, or rue nature of the ground, makes it necessary to set the level more than once, set down all the backward sights in one column and all the forward sights in another. Add up these columns, and take the less of the two sums from, the greater, and the difference will be the difference of level required. Thus, to find the difference of level between A and D (fig. 43), the level is first set between A and .B, and sights are taken on A and B ; the level is then set between B and C, and sights are taken on B and

* The level should be placed midway between the two points, when practicable, In order to neutralize the effect of inaccuracy in the adjustment of the instrument, And for the reason given in § i05.

TIEir.IITS AND SLOPE STAKES.

79

C, lastly: the level is set

pa o

usually divided into regular the datum plane is required

between C and D, and sights are taken on 6' and D. Then the ditlcrence of level between ^1 and D \s E D = {BP+ KC-\- OD) [AF-VBJ-\- NC). For E D == no - LC ^ tl M -\-MC—L C. llutllM = h G = BF- AF, MC =^KC - D I, and L C =^ N C 0 D. Sal)stituting these values, we have ED = BP AF-\- KG -BI - iVC+ 0D = (BP-]- KG + CD) {AF+ Bl

-^ NC).

98. It is often convenient to refer all heights to an imaginary level plane called the Jalum plane. This plane may be assumed at starting to pass through, or at some fixed distance above or below, any permanent o1)ject, called a bmch-mark, or simply a bench. It is most convenient, in order to avoid mi- nus heights, to assume the datum plane at such a distance below the bench- mark, that it will pass below all the points on the line to be levelled. Thus if A F> (tig. 44) were part of the line to be levelled, and if A were the starting point, we should assume the datum plane GD at such a distance below some permanent object near A, as would make it pass below all the points on the line. If, for instance, we had reason to believe that no point on this line was more than 15 or 20 feet below A, we might safely assume G D to be 25 feet below the bench near A, in which case all the distances from the line to the datum plane would be posi- tive. Lines before being levelled are stations, the height of each of which above

80

LEVELLING.

^9. Prol>!eill. To find the heights above a datum plane of the sev

eral stations on a given line.

Solution. JjetA B (fig. 44) represent a portion of the line, divided into regu lar stations, marked 0, 1,2, 3, 4, 5, «Sbc and let CD represent the datum plane, assumed to be 25 feet below a bench- mark near .1. Suppose the level to be set first between stations 2 and 3, and a sight upon the bench-mark to be taken, and found to be 3.125. Now as this sight shows that the plane of the level E F'ls 3.125 feet above the bench-mark and as the datum plane is 25 feet bo low this mark, we shall find the height of the plane of the level above the da turn plane by adding these heights, which gives for the height of E F 25 -\- 3.125 = 28.125 feet This height mav for brevity's sake be called the height of the instrument, meaning by this the height of the line of sight of the instru ment.

If now a sight be taken on station 0, vcQ shall obtain the height of this sta- tion above the datum plane, by sub- tracting this sight from the height of the instrument ; for the height of this station is 0 C and OC=EC— EO. Thus if EO = 3 413, 0 C = 28.125 3.413 = 24.712. In like manner, the heights of stations 1, 2, 3, 4, and 5 may be found, by taking sights on them in succession, and subtracting these sights from the height of the instrument. Suppose these sights to be respective- ly 3.102, 3.827, 4.816, 6.952, and 9.016, and we have = 28.125 3.413 = 24.712,

height of station 0

1 = 28.125 3.102 = 25.023,

HEIGHTS AND SLOPE STAKES. 81

height of station 2 = 28.125 3.827 = 24.298, " " " 3 := 28.125— 4.816 = 23.309, '' " " 4 = 28.125 6.952 = 21.173, « *' " 5 = 28.125 9.016 = 19.109.

Next, set tlie level between stations 7 and 8, and as the height of sta- tion 5 is known, take a sight upon thTs point. This sight, being added to the height of station 5, will give the height of the instrument in its new position ; for G K = 6' 5 + 5 K. Suppose this sight to be G 5 = 2.740, and we have GK= 19.109 + 2.740 = 21.849. A point like station 5, which is used to get the height of the instrument after resetting, is called a turning point. The height of the instrument being found, sights are taken on stations 6, 7, 8, 9, and 10, and the heights of these stations found by subtracting these sights from the height of the instrument. Suppose these sights to be respectively 3.311, 4.027, 3.824, 2.516, and 0.314, and we have

height of station 6 = 21.849 3.311 = 18.538, ■' " " 7:^-21.849 4.027 = 17.822, " " " 8 = 21.849 3.824 = 18.025, « » « 9 = 21.849 2.516 = 19.333, " " " 10 = 21.849 0.314 = 21.535.

The instrument is now again carried forward and reset, station IC IS used as a turning point to find the height of the instrument, and every thing proceeds as before.

At convenient distances along the line, permanent objects are se lected, and their heights obtained and preserved, to be used as starting points in any further operations. These are also called benches. Let us suppose, that a bench has been thus selected near station 9, and that the sight upon it from the instrument, when set between stations 7 and 8, is 2.635. Then the height of this bench will be 21.849 2.635 = 19 214.

100. From what has been shown above, it appears that the first thing to be done, after setting the level, is to take a sight upon some point of known height, and that this sight is always to be added to the known height, in order to get the height of the instrument. This first sight may therefore be called a p///s sight. The next thing to be done is to take sights on those points whose heights are required, and to subtract these sights from the height of the instrument, in order to get the required heights. These last sights may therefore be called mimia sights

82

LEVELLING.

101. The field notes are kept in the following form. The first col umn in the table contains the stations, and also the benches marked B., and the turning points marked t. p., except when coincident wuli a station. The second column contains the plus sights ; the third col- umn shows the height of the instrument ; the fi)urth contains the ininus sights ; and i\iQ fifth contains the heights of the points in the first column.

Station

+ s.

H.I.

S.

1

n.

B.

3.125

25.000

0

28.125

3.413

24.712

1

3.102

25.023

2

3 827

24.298

3

4.816

23.309

4

6.952

21.173

5

2.740

9.016

19.109

6

21.849

3311

18.538

7

4.027

17.822

8

. 3.S24

18.025

9

2.516

19.333

B.

2.635

19.214

10

0.314

21.535

The height of the bench is set down as assumed above, namely, 25 feet; the first plus sight is set opposite B., on which point it was taken, and, being added to the height in the same line, gives the height of the instrument, which is set opposite 0 ; the minus sights are set opposite the points on which they are taken, and, being subtracted from the height of the instrument, give the heights of these points, as set down in the fifth column. The minus sights are subtracted from the same height of the instrument, as far as the turning point at station 5, inclusive. The plus sight on station 5 is set opposite this station, and a new height obtained for the instrument by adding the plus sight to the height of the turning point. This new height of the instrument is set opposite station 6, where the minus sights to be subtracted from it commence. These sights are again set opposite the points on which they were taken, and, being subtracted from the new height of the in- strument, give the heights in the last column.

102. Problem. To set slope stakes for excavations and embank- ments.

Solution. Let A B H K C (fig. 45) be a cross-section of a proposed excavation, and let the centre cut A M = c, and the width of the road

HEIGHTS j'ND SLOPE STAKES.

83

fM}d II K = b. The slope of the sides B H or C Kis usually given by the ratio of the base K Nto the height E N. Suppose, in the present case, that KN : E N ^ 3 : 2, and we -have the slope = I . Then if the ground were level, as D A E, it is evident that the distance from

Fig. 45

the centre A to the slope stakes at D and E would be yl Z) = A E M K -\- KN=^b + I c. But as the ground rises from A to C t!i rough a height C G = g, the slope stake must be set farther out a distance E G = ^ g ; and as the ground falls from A to B through a height B F =^ g, the slope stake must be set farther in a distance D F

3 = 2 9-

To find B and C, set the level, if possible, in a convenient position for sighting on the points A^ B, and C. From the known cut at the centre find the value oi AE = ^h -{-^c. Estimate by the eye the rise from the centre to where the slope stake is to be set, and take this as the probable value of g. To A E add | g, as thus estimated, and measure from the centre a distance out, equal to the sum. Obtain now by the level the rise from the centre to this point, and if it agrees with the estimated rise, the distance out is correct. But if the esti- mated rise prove too great or too small, assume a nev.^ value for g, measure a corresponding distance out, and test the accuracy of the estimate by the level, as before. These trials must be continued, until the estitnated rise agrees sufficiently well with the rise found by the level at the corresponding distance out. The distance out will then be hb -\- 2*^ -{•% g- The same course is to be pursued, when the ground falls from the centre, as at Z? ; but as g here becomes viinns. the dis- tance out, when tlie true value of g is found, will hQ A F = A D DF- ^h-^lc-lg.

For embankment, the process of setting slope stakes is the same as for excavation, except that a rise in the ground from the centre on embankments corresponds to a fall on excavations, and vice vcrsd. This will be evident by inverting figurd 45, which will then represent

84 LEVELLING.

an embankment. AMiat was before ^ fall to Z?, becomes now a rwe, and what was before a rise to C, becomes now a fall.

WHien tlie section is partly in- excavation and partly in embankment, the method above applies directly only to the side which is in excava lion at the same time that the centre of the road-bed is in excavation, or in embankment at the same time that the centre is in embank- ment. On the opposite side, however, it is only necessary to make c in the expressions above minus, because its effect here is to diminish the distance out. The formula for this distance out will, therefore, be- come ^b 2*^ -^ 2 y-

Article II. Correction for the Earth's Curvature and

FOR Refraction.

103. Let A C (fig. 46) represent a portion of the earth's surface. Then, if a level be set at A, tlie line of sight of the level will be the tap- gent A D, while the true level will be A C. The difference Z) C be- tween the line of sight and the true level is the correction for the earth's curvature for the distance ^1 D.

104. A correction in the opposite direction arises from refraction. Refraction is the change of direction which light undergoes in passing from one medium into another of different density. As the atmos- phere increases in density the nearer it lies to the earth's surface, light, passing from a point B to a. lower point ^4, enters continually air oJ greater and greater density, and its path is in consequence a curve concave towards the earth. Near the earth's surface this path may be taKen as the arc of a circle whose radius is seven times the radius of the earth.* Now a level at A, having its line of sight in the direction A D, tangent to the curve A B, is in the proper position to receive the light from an olyect at B ; so that this object appears to the observer to be at D. The effect of refraction, therefore, is to make an object appear higher than its true position. Then, since the correction foj the earth's curvature D C and the correction for refraction D B aie in opposite directions, the correction for both will ha B C = D C D B.

* Peirce's Spherical Astronomy, Chap. X., § 125 It should be observed, how- ever, that the effect of refraction is verj' uncertain, varjing with the state of the atmosphere Sometimes the path of a r.i}- is even made convex towards the earthy «nd sometinies the rays are refracted horizontiUy a^ well as yertically.

I

earth's curvature and refraction.

P5

This correction must be added to the height of any object as deter- mined by the level.

105. Prol>leill. Given the distance AD = D [Jig. 46), the radim of the earth A E = R, and the radius of the arc of refracted light = 7 R, '<) find the correction BC = dfor the earih's curvature and for refraction.

Solution. To find the correction for the earth's curvature D C, we have, by Geometry, D C {D C -{• 2E C) = A D^ or D C {D C + 2 R) = D^. But as Z) Cis always very small compared with the diameter of the earth, it may be dropped from the parenthesis, and we have

D C X 2 72 = D-, or Z) C = .y-^ . The correction for refraction D B may be found by the method just used for finding D C, merely chang- ing R into 7 R. Hence D B =^ ^-j. . We have then d = B C ^ DC- DB^ ^

J2L

UR

or

d =

3D^ 7R

By this formula Table III. is calculated, taking R = 20,911,790 ft, as given by Bowditch. The necessity for this correction may be avoided, whenever it is possible to set the level midway between the points whose height is required. In this case, as the distance on each side of the level is the same, the corrections will be equal, and will destroy each other.

66

LEVELLING.

Article III. Vertical Curves.

106. Vertical curves are used to round off the angles fonaed b^ the meeting; of two grades. Let A Cand CB (fig. 47) be two grades meeting at C. These grades are supposed to be given by the rise per sta- tion in uoing in some particuU^r direction. Thus, starting from ^1. the grades of A Cand (^ B may be denoted respectively by^ and 9'; that is, (J denotes what is added to the height at every station on A C, and ij' denotes what is added to the height at every station on CB],hui since CB is a descending grade, the C[uantity added is a minus quan- tity, and (/' will therefore be negative. The parabola furnishes a very simple method of putting in a vertical curve.

107. Problem. Given the grade g of A C [fig. 47), the grade a of C B, and the number of stations n on each side of C to the tangent points A and B, to unite these points by a parabolic vertical curve.

Fig. 47

Solution. Let A E B he the required parabola. Through B and C draw the vertical lines FK and C H, and produce A C to meet FK in F. Through .1 draw the horizontal line A K, and join A B, cut- ting C H in D. Then, since the distance from C to A and B is meas- ured horizontally, we have A H =^ H K. and consequently AD = D B. The vertical line CD is, therefore, a diameter of the parabola 84, L), and the distances of the curve in a vertical direction from the stations on the tangent A i^are to each other as the squares of the number of stations from A (^ 84, II.). Thus, if a represent this dis- tance at the first station from A, the distance at the second station would be 4 a, at the third station 9 a, and at B^ which is 2 n stations

FB from xV, it would be 4ii^a; that is, FB = 4n^a, or a = ^^ . To find

a, it will then be necessary to find FB first. Through Cdraw the horizontal line C G and we have, from the equal triangles C F G and

VERTICAL CURVES. ^'

ACH, FG = C II But C II is the rise of the first grade g in the n stations from A to C; that is, 0 ^ =- n <j, or F G = n ,j. G B is also the rise of the second grade g' in n stations, but since r/' is negative 106),weinustpat G'/->^ = -?ii/'- Tlicrefore, FZ^ = F G ■{- GB = ng - ng'. Substituting this value of FB in the equation for a

ns n

:ri

ive have a = -^: , or

9—9'

a =

4 n

Tlie value of n being thus determined, all the distances of the curve from the tangent .1^; viz. a, 4 a, 9 «, 16 a, &e, are known. Now if ran«i '/'' be the first and second stations on the tangent, and verti- cal lines IP and 2'' P' be drawn to the horizontal line J /if, the height TP of tlie first station above A will be//, the height 7''P' of the^sccond station above ^ will be 2g, and in like manner for suc- ceeding stations we should find. the heights 3</, 4(/, &c As we have already found TM = a, T' M' = 4 a, &c., we shall have for the heights of the carve above the level of A, MP = T P I'M =

g (^ ]ji pi ^ ']'! pi _ T' M' = 2g 4 a, and in like manner for

the succeeding heights 3 ^r 9 a, 4^ 16a, &c. Then to find the grades for the curve at tlie successive stations from A, that is, the rise of each height over the preceding height, we must subtract each height from the next following height, thus: {g a) —0 = g a, {2g-4a)-{g-a) = g - 3 a, {3 g - 9 a) -(2^ -4 a) =g-5a, (4 <7 1 6 a) (3 ^ 9 a) = g 7 a, &c. The successive grades for the vertical curve are, therefore,

^ S' «5 g 3a, g 5a, g 7 a, &c.

In finding these grades, strict regard must be paid to the algebraic signs. The results are then general ; though the figure represents but one of the six cases that may arise from various combinations of ascending and descending grades. If proper figures were drawn to represent the' remaining cases, the above solution, with due attention to the signs, would apply to them all, and lead to precisely the same formuloe.

108. Examples. Let the number of stations on each side of Che 3, and let A C ascend .9 per station, and CB descend .6 per station. Here

S-s' .9- (-.6) 1.5 n ^ 3, g = .9, and g' = —.6. Then, a = -^- =- 4x3 ~ 12

v_ .12.'>, and the grades from A to B will be

88 LEVELLING.

g a = .9 .125 = 775, g 3 a = .9 .375 = .525, g 5 a = .9 .625 = .275, g 7 a = .9 .875 = .025, g 9 a = .9 1.125 = •.225, ^ ~ 11 a = .9 1.375 = .475.

As a second example, let the first of two grades descend .8 per s'a tion, and the second ascend .4 per station, and assume two stations on each side of C as the extent of the curve. Here g = .8, g' = A,

and n = 2. Then a = ^'2 s" ~ '^^' ^"^ ^^^® ^^^^ grades required will be

g—a = .8— (— .15) = .8 + .15 = .65, ^ 3 a = .8 (— .45) = .8 + .45 = .35, g 5a = .8 ( .75) == .8 + .75 = .05. ^ 7a = .8 (— 1.05) = .8 + 1.05 = + .25.

It will be seen, that, after finding the first grade, the remaining grades may be found by the continual subtraction of 2 a. Thus, in the first example, each grade after the first is .25 less than the preceding grade, and in the second example, a being here negative, each grade after the first is .3 greater than the preceding grade.

109. The grades calculated for the whole stations, as in the fore- going examples, are sufficient for all purposes except for laying the track. The grade stakes being then usually only 20 feet apart, it will be necessary to ascertain the proper grades on a vertical curve for these sub-stations. To do this, nothing more is necessary than to let g and g' represent the given grades for a sub-station of 20 feet, and n the number of sub-station.s on each side of tlie intersection, and to apply the preceding formulae. In the last example, for instance, the first grade descends .8 per station, or .16 every 20 feet, the second grade ascends .4 per station, or .08 every 20 feet, and the number of sub-stations io 200 feet is 10. We have then ^ = .16, g' = .08, and n = 10

-16 .08 .24 - rr.1 ^ . 1 ^T,

Hence a = ^ -^q = —^ = .OOt. The first grade is, there

fore, g a = .16 + .006 = .154, and as each subsequent grade increases .012 108), the whole may be written down without farther trouble, thus: —.154, —.142, .130, .118, .106, —.094, —.082, .070, —.058, —.046, —.034, —.022, —.010, + 002, -f .014, +.O^fi. + .038 -h .050, + 062, + .074.

ELLVATION OF THE OUTEPt RAIL ON CUKV£ES.

91

^ "'^ ft., Articlk IV. Elevation of the Outer Eail on Curves. ^

110. Problem. Giveti the radius of a curve R, the gauge of the track g, and the velocity of a car per second v, to determine the proper ele- vation e of the outer rail of the curve.

Solution. A car moving on a curve of radius /?, with a velocity per sec-

ond = r, lias, by Mechanics, a centrifugal force -= j. To counteract this force, the outer rail on a curve is raised above the level of the inner rail, so that the car may rest on an inclined plane. This eleva- tion must be such, that the action of gravity in forcing the car down the inclined plane shall be just equal to the centrifugal force, which impels it in the opposite direction. Now the action of gravity on a body resting on an inclined plane is equal to 32.2 multiplied by the ratio of the height to the length of the plane. But the height of the plane is the elevation e, and its length the gauge of the track g. This action of gravity, which is to counteract the centrifugal force, is, there- fore, = ^^ . Putting this equal to the centrifugal force, we have

322e ifi.2 « 1

g ~ 1^

Hence

qv* e = ^

32.2 R

50 If we substitute for R its value 10) R = ^j^;^ , we have e =

ir "oA ? = .000G2112 7^2 sin. D. If the velocity is given in miles ^^ ^ ^-^ ' Jfx5280

per hour, represent this velocity by M, and -vve have v = gQ ^ qq

Substituting this value of y, we find e = .0013361 g M^ sin. D. When g = 4 7, this becomes e = .00627966 M^ sin. D. By this formula Table IV. is calculated. In determining the proper elevation in any given case, the usual practice is to adopt the highest customary speed of nassenger trains as the value of M.

111. Still the outer rail of a curve, though elevated according to the preceding formula, is generally found to be much more worn than the inner rail On this account some are led to distrust the formula, and to give an increased elevation to the rail. So far, however, as the centrifugal force is concerned, the formula is undoubtedly correct, and the evil in question must arise from other causes, causes which are not counteracted by an additional elevation of the outer rail. The principal ofthe.se causes is probably improper " coning" of the wheels. Two wheels, immovable on an axle, and of the same radius, must, iC

90 LE /ELLING.

no slip is allowed, pass over equal spaces in a given number of revo- lutions. Now as the outer rail of a curve is longer than the inner rail, the outer wheel of sucli a pair must on a curve fall behind the inner wheel. The first effect of this is to bring the flange of the outer wheel against the rail, and to keep it there. The second is a strain on the axle consequent upon a slip of the wheels equal in amount to the dif ference in length of the two rails of the curve. To remedy this, con- ing of the wheels was introduced, by means of which the radius of the outer wheel is in effect increased, the nearer its flange approaches the rail, and this wheel is thus enabled to traverse a greater distance than the iTiner w^heel.

To find the amount of coning for a play of the wheels of one inch, let r and r' represent the proper radii of the inner and outer wheels respectively, when the flange of the outer wheel touches the rail. Then r' r will be the coning for one inch in breadth of the tire. To ena- ble the wheels to keep pace with each other in traversing a curve, their radii must be proportional to the lengths of the two rails of the curve, or, which is the same thing, proportional to the radii of these rails. If 7t be taken as the radius of the inner rail, the radius of the outer rail will be 72 + ^, and we shall have r : r' ^ R '. R -\- g. Therefore, r R -\- r g ^^ r' R, or

r r = _£, . R

As an example, let R = 600, r = 1.4, and g = 4.7. Then we have

1.4 X 4-7 r' r gQQ " Oil ft. For a tire 3.5 in. wide, the coning

would be 3. .5 X .011 = .038.5 ft., or nearly half an inch. Wheels coned to this amount would accommodate themselves to any curves of not less than 600 feet radius. On a straight line the flanges of the two wheels would be equally distant from the rails, making both wheels of the same diameter. On a curve of say 2400 feet radius, the flange of the outer Avheel would assume a position one fourth of an inch nearer to the rail than the flange of the inner wheel, which would increase the radius of the outer wheel just one fourth of the necessary increase on a curve of 600 feet. Should the flange of the outer wheel get too near the rail, the disproportionate increase of the radius of this wheel would make it get the start of the inner wheel, and cause the flange to recede from the rail again. If the shortest radius were taken

1.4X 4.7 as 900 feet, r and g remaining the same, we should have ?' r 900""

ELEVATION OF THE OUTER RAIL ON CURVES.

91

x= .0073, and for the coning of the whole tire 3.5 X -0073 - .0256 ft., or about three tenths of an inch. Wheels coned to this amount would accommodate themselves to any curve of not less than 900 feet radius. If the wheels are larger, the coning must be greater, or if the gauge of the track is wider, the coning must be greater. If the play of the wheels is greater, the coning may be diminished. Hence it might be advisable to increase the play of the wheels on short curves, by a slight increase of the gauge of the track.

Two distinct things, therefore, claim attention in regard to the mo- tion of cars on a curve. The first is the centrifugal force, which is generated in all cases, when a body is constrained to move in a cur- vilinear path, and which may be effectually counteracted for any given velocity by elevating the outer rail. The second is the unequal length of the two rails of a curve, in consequence of which two wheels fixed on an axle cannot traverse a curve properly, unless some provision is made for increasing the diameter of the outer wheel. Coning of the wheels seems to be the only thing yet devised for obtaining this in- crease of diameter. At present, however, there is little regularity either in the coning itself, or in the distance between the flanges of wheels for tracks of the same gauge. The tendency has been to di- minish the coning,* without substituting any thing in its place. If the wheels could be made to turn independently of each other, the whole difficulty would vanish ; but if this is thought to be impracticable, the present method ought at least to be reduced to some system.

* Bush and Lobdell, extensive wheel-makers, say, in a note published in Apple- tons' Mechanic's Magazine for August, 1852, that wheels made by them fcr the New York and Erie road have a coning of but one sixteenth of an inch. This coning on % track of six feet gauge with the c .her data as given above, would suit no ciirva •f less than a mile radius.

^..

92

KARTH-WORK.

CHAPTER IV. EAKTH-WORK.

Akticlk I. Prisjioidal Formula.

112. Earth-work includes the regular excavation uirI tinbank ment on the line of a road, borrow-pits, or such additional excavations as are made necessary when the embankment exceeds the regular ex cavation, and, in general, any transfers of earth that require calcula- tion. We begin with the prismoidal formula, as this formula is fre- quently used in calculating cubical contents both of earth and masonry.

A prismoid is a solid having two parallel faces, and composed of prisms, wedges, and pyramids, whose common altitude is the perpen- dicular distance between the parallel fiices.

113. Problem. Given the areas of the parallel faces B and B , the middle area 21, and the altitude a of a prismoid, to find its solidity S.

Solution. The middle area of a prismoid is the area of a section midway between the parallel faces and parallel to them, and the alti- tude is the perpendicular distance between the parallel faces. If now b represents the base of any prism of altitude a, its solidity is ab. If 6 represents the base of a regular wedge or half-parallelopipedon of alti- tude a, its solidity is kab. Kb represents the base of a pyramid of altitude a, its solidity is ^ a 6. The solidity of these three bodies ad mits of a common expression, which may be found thus. Let m rep- resent the middle area of either of these bodies, that is, the area of a section parallel to the base and midway between the base and top. In the prism, m = b, in the regular wedge, m = ^b, and in the pyramid, m = ^b. INIoreover, the upper base of the prism = b, and the upper base of the wedge or pyramid = 0. Then the expressions a b, ha &, and kab may be thus transformed. Solidity of

prism = ab =- X &b =-ib -\-b -{: Ab) =-{b-\-b-{- 4m),

6 6 6

wedge =ia6 = -X36 = f.(0 + 6-f2 6) =-(04-6+4 m),

6 6 6

pyramid =^ab = -X2b=-{0-\-b-^b) =f(0 + 6-1-4 '»j,.

6 6 6

EORROW-PITS.

93

Hence, the solidity of either of these bodies is found by adding togeth- er the area of the upper base, the area of the lower base, and four times the middle area, and multiplying the sum by one sixth of the altitude. Irregular wedges, or those not half-parallelopipedons, may be measured by the same rule, since they are the sum or difference of a regular wedge and a pyramid of common altitude, and as the rule applies to both these bodies, it applies to their sum or difference.

Now a prismoid, being made up of prisms, wedges, and pyramids of common altitude with itself,.will have for its solidity the sura of the solidities of the combined solids. But the sum of the areas of the upper and lower bases of the combined solids is equal to 5 + B\ the sum of the areas of the parallel faces of the prismoid ; and the sum of the middle areas of the combined solids is equal to J/, the middle area of the prismoid. Therefore

5 = ^(S + 5' + 4 37). 6

AUTICLE II. BORROW-PlTS.

114. For the measurement of small excavations, such as borrow- pits, &c., the usual method of preparing the ground is to divide the surface into parallelograms * or triangles, small enough to be consid- ered planes, laid off from a base line, that will remain untouched by the excavation. A convenient bench-mark is then selected, and levels taken at all the angles of the subdivisions. After the excavation is made, the same subdivisions are laid off from the base line upon the oottom of the excavation, and levels referred to the same bench-mark are taken at all the angles.

This method divides the excavation into a series of vertical prisms, generally truncated at top and bottom. The vertical edges of these prisms are known, since they are the differences of the levels at the top and bottom of the excavation. The horizontal section of the prisms is also knoAvn, because the parallelograms or triangles, into which the surface is divided, are always measured horizontally.

11.5. Problem. Given the edges h, hi , and ho , to find the solidity

If the ground is divided into rectangles, as is generally done, and one side made 27 feet, or some multiple of 27 feet, the contents may be obtained at once in rubic yards, by merely omitting the factor 27 in the calculation.

94

EARTH-WORK.

S of a veitical prism, whether truncated or not. whose horizontal section ti o triangle of given area A.

Fig. 48

Solution. "Wlicn the prism is not truncated, we have h = h^ = k^' The ordinary mle for the solidity of a prism gives, therefore, S = Ah ■^ A X b {h + hi -{- hr,). When the prism is truncated, let ABG- F G H {i\g. 48) represent such a prism, truncated at the top. Through the lowest point A of the upper face draw a horizontal plane A D E cutting off a pyramid, of which the base is the trapezoid B D E C, and the altitude a perpendicular let fall from A on D E. Represent this perpendicular by p, and we have (Tab, X. 52) the solidity of the pyra- mid = ^px BDEC ==\pxDExh{BD^ C E) = ^pX DE X ^ {BD -\- CE) = A X h [BD + CE), since hp X DE = A D E = A. But I {BD -\- CE) is the mean height of the verti- cal edges of the truncated portion, the height at A being 0. Hence the formula already found for a prism not truncated, will apply to the portion above the plane ^ Z> £", as well as to that below. The same reasoning would apply, if the lower end also were truncated. Hence, for the solidity of the Avhole prism, whether truncated or not, we have

S=AXhih + h,+ h.).

116. Problem. Given the edges h, h^, hn, and A3, to Ji7id tU solidity S of a vertical prism, ivheiher truncated or not, whose horizoUat section is a parallelogram, of given area A.

BORROW-PITS.

9fi

Solution. Let B H (fig. 49) represent such a prism, whether trim cated or not, and let the plane BFHD diviie it into two triangular

Fig. 49

prisms AFH and C F H. The horizontal section of each of these prisms will be ^ A, and if A, h^ , h^ , and h^ represent the edges to which they are attached in the figure, we have for their solidity 115) A FH =^A X k i^i-^ h + h). and CFH = ^A X ^ (^i + h + ^g). Therefore, the whole prism will have for its solidity S = ^ A X ^ {h + 2/tji + 112 + 2 A3). Let the whole prism be again divided b} the plane AE G C into two triangular prisms BEG and D E G Then we have for these prisms, B E G = hA X ^ {^^ + ^h + h)^ and D E G = h A X J (^ + ^'2 + '^3)5 and for the whole prism, S ^A X ^ (2 A + /ij + 2 /<2 + h). Adding the two expressions found for S, we have 2 S = ^ A {h -^ h^ + h^ -\- Jh), or

^ S=A X i{h-{-h, + h. + h,).

It will be seen by the figure, that h {h + ho) = KL = h {K + fh), or h -\- kz = hi -{- h^ . The expression for S might, therefore, be re- duced to S = A X k i^ + h), or S = A X ^ {hi + h^). But as the ground surfaces A B CD and E F GHare seldom perfect planes, it is considered l>etter to use the mean of the four heights, instead of the mean of two diagonally opposite.

117. Corollary. When all the prisms of an excaA-ation have ilic same horizontal section A, the calculation of any number of them

06

KARTH-WOKK

may be performed by one operation. Let figure 50 be a plan ot such an excavation, the heights at the angles being denoted by a, Oi , Oo, ^

a,

«*«

\h3

d*

bs

\c

C/

r^

C3

Pd. Ca

d

d>

ds

a>

Fig. 50.

6i , &c. Then the solidity of the whole will be equal to \A multi plied by the sum of the heights of the several prisms 116). Into this sum the corner heights a, Oo , h^h^, Cj,, </, and d^ will enter but once, each being found in but one prism ; the heights 01,^4, c, di, do, and rfj will enter ticice, each being common to two prisms ; the heights fe. , bj, and t'4 will enter three times, each being common to three prisms; and the heights ioj^ijCo, and c^ will enter four times, each being common to four prisms. If, therefore, the sum of the first set of heights is represented by Si , the sum of the second by So , of the third by S3 , and of the fourth by s^ , we shall have for the solidity of all tho pnsms

>S = I J. (si + 2 So + 3 S3 + 4 S4).

Article III. Excavation and Embankment.

118. As embankments have the same general shape as excavations, it will be necessary to consider excavations only. The "simplest case is when the ground is considered level on each side of the centre line. Figure 51 represents the mass of earth between two stations in an ex- cavation of this kind. The trapezoid G B F H is a section of the mass at the first station, and Gi Bi F^ H^ a section at the second sta- tion; AE \s the centre height at the first station, and A^ E^ the centre height at the second station ; HffiFiFis the road-bed, G Gi B^ B the

CENTRE HEIGHTS ALOJSE GU^EN.

9*:

surface of the ground, and G Gi H^ 11 and BB^F^F the planes form- ing the side slopes. This solid is a prismoid, and might be calculated bv^the prismoidal formula 113). The following metaod gives the same result.

A. Centre Ileifjhts alone given.

119. Problem. Given the centre heiyhts c and Cj , the width of the road-hed 6, the slope of the sides s, and the length of the section I, to find *he soliditij S of the excavation.

Fig. 51.

}sol-iiion. Let c be the centre height at A (lig. 51) and Cj the height af, X. . The slope s is the ratio of the base of the slope to its perpen- dicular height 102). We have then the distance out ^ B = ^6 + sc, and the distance out A^B^ ^ \h -\-sci{\ 102). Divide the whole mass into two equal parts by a vertical plane A Ai E^ E drawn through the centre line, and let us find first the solidity of the right- hand half. Through B draw the planes BEE^, BA^Ei, and B^jFi, dividing the half-section into three quadrangular pyramids, having for their common vertex the point Z5, and for their bases the planes AA^EiE, E Ey Fi F, and AiBiF^Ei. For the areas of these bases we have

Areaof ^ Ji^i^ " " EEiFiF " " A,B,F,E,

= iEEi X {AE-{- A^E,) = ^EFx EE, =

=^^A,E,X{E,F,+A,Bi):^^{bc,^sc,*);

^/(c + Ci), hbl.

and lor tlie perpendiculars from the vertex B on these bases, produced when necesyarv.

98 EARTH-WORK.

Perpendicular on A A^E^E = A B 1 6 -f o c, '' EExF^F = AE ^ c, " « A^B^F.Ei = EEi = I.

Then (Tab. X. 52) the solidities of the three pyramids are

B-AA,E,E =|(i6 + sc) X ^/(c + cO=|/(i6c-f-^6c,-^

B-EE^l\F =\cY.\hl ^'llbc,

B-A^B,F,E,= II X h (^Ci + sO =U(6ci+sci2).

Their sum, or the solidity of the half-section, is

LS = \l[lh{c-\- Ci) + s (c^ + Ci2 + cci)l.

Therefore the solidity of the whole section is

^S- - i / [i Mc + cx) -f s (c^ + c,-' + cc,)J, or

^ 5 = i / [6 (c + c) 4- I s (c' + Ci^ -f c c,) J

When the slope is 1^ to 1, s = i, and the factor fs = I may be dropped.

120. Problem. To Jind the solidity S of any number n of succes- sive sections of equal length.

Solution. Let c, Ci,C2,C3, &c. denote the centre heights at the suc- cessive stations. Then we have 119)

Solidity of first section = ^l[b {c + Ci) -f f s (c^ + Cj^ + c c^)], " « second section = ^ Z [6 (ci + Co) + | s (cj* + Co- + c^ Co)], « " third section = |/ [6 (cg + Cg) + | s (ca^ + Ca^ + C0C3)], &c. &c.

For the solidity of any number n of sections, we should have ^l mul- tiplied by the sum of the quantities in n parentheses formed as those iust given. The last centre height, according to the notation adopted, will be represented by c, and the next to the last by c„_i. Collect- ing the terms multiplied by b into one line, the squares multiplied by I s into a second line, and the remaining terms into a third line, we have for the solidity of n sections

^^ S=hl 6 (c4- 2f: -f 2r, -f 2c3 + 2c„_i + c„)

4. |S (c2+2Ci2 4-2C22 + 2C32.... +2c2„_l + C»„) + I S (C Ci + Ci Co + C2 C3 + ^a C4 + c„- 1 On).

When s = I , the factor f s = 1 may be dropped.

CENTRE AND SIDE HEIGHTS GIVEN.

99

Example. Given / = 100, 6 = 28, s = i , and the stations and cen- tre heights as set down in the first and second columns of the annexed table. ''The calculation is thus performed. Square the heights, and set the squares in the third column. Form the successive products c ci , Ci C2 , &c., and place them in the fourth column. Add up the last three columns. To the sum of the second column add the sum itself, minus the first and the last height, and to the sum of the third column add the sum itself, minus the first and the last square. Then 86 is the multiplier of b in the first line of the formula, 592 is the second line, since § s is here 1, and 274 is the third line. The product of 86 by b = 28 is 2408, and the sum of 274, .592, and 2408 is 3274. This mul- tiplied by |/ --= 50 gives for the solidity 163.700 cubic feet.

Station.

c.

c-i.

CCi.

0

9

4

1

4

16

8

2

7

49

28

3

6

36

42

4

10

100

60

5

1

49

70

6

6

36

42

7

4

16

24

46

306

274

40

286

592

86

592

2408

28

2)3274

2408

163700.

B. Centre and Side Heights given.

121. When greater accuracy is required than can be attained by Ae preceding method, the side heights and the distances out 102) are introduced. Let figure 52 represent the riglit-hand side of an excava tion between two stations. AAi By B is the ground surface ; AE =^ c and A^Ei = Ci are the centre heiglits ; B G = h and C, Gi = hi , the side heights ; and d and d^ , the distances out, or the horizontal distan- ces of B and Bi from the centre line. The whole ground surface may sometimes be taken as a plane, and sometimes the part on each side of the centre line may be so taken ; * but neither of these suppo-

* It is easy in any given case to ascertain whether a surface like A Ai Bi £ is a

iOO EARTH-WORK.

sitions is sufficiently accurate to serve as the basis of a general mciiiod. In most cases, however, we may consider the surface on each side of the centre line to be divided into two triangular planes by a diagonal passing from one of the centre heights to one of the side heights. A ridge or depression will, in general, determine which diagonal ought to be taken as the dividing line, and this diagonal must be noted in the field. Thus, in the figure a ridge is supposed to run from B to ^4.1, from which the ground slopes downward on each side to A and Bi . Instead of this, a depression might run from A to B^ , and the ground rise each way to A^ and B. If the ridge or depression is very marked, and does not cross the centre or side lines at the regular sta- tions, intermediate stations must be introduced to make the triangular planes conform better to the nature of the ground. If the surface happens to be a plane, or nearly so, the diagonal may be taken in either direction. It will be seen, therefore, that the following method is applicable to all ordinary ground. When, however, the ground is very irregular, the method of § 127 is to be used.

122. Problem. Given the centre heights c and c^ , the side heights on the right h and h^ , on the left h' and h\ , the distances out on the right d and d^ , on the left d' and d'l , the icidth of the road-bed b, the length of the section /, and the direction of the diagonals, to find the solidity S of the

excavation.

Solution. Let figure 52 represent the right-hand side of the excava- tion, and let us suppose first, that the diagonal runs, as shov,n in the figure, from B to Ai- Through B draw the planes B E E^, B A^Ei, and BEiFi, dividing the half-section into three quadrangular pyra- mids, having for their common vertex the point B, and for their bases the planes A A^ E^E, E E^ F^ F, and A, B, F^ E, . For the areas of these bases we have

Areaof^^i^iJ^; = ^ E E, x{AL-]-A^E,) -|/(c-fc,), " ^'EE.FiF =EFxEEi =^l^h

" » A, B, F, E, = ^ A, E^xdi + k ^i F^Xh, = ^d,c, -\- ibh, ,

and for the perpendiculars from the vertex B on these bases, produced when necessary,

plane ; for if it is a plane, the descent from A to B will be to the descent from Ai to Bi , as the distance out at the first station is to the distance out at the second sta- tion, that is, c h:ci hi = d:di. K we had c = 9, A = 6, fi = 12, «! = 8, d = 24, and di = 27, the formula would give 3 : 4 = 24 : 27 which shows that tho lurface is not a plane.

CENTRE AND SIDE HEIGHTS GIVEN

Perpendicular on A A^^ E^ E E G = d, " E E, F, F =^ BG ^K " A,B,F,E, = EE, -/.

10)

A I

Fig. 52.

Then (Tab. X. 52) the solidities of the three pyramids arc

B-AA,E,E = :^d X ^-Mc + ci) = |/ (c?c + c/c,),

B-EE,F,F = I A X ^ '^^ =llbh,

B-A,B,F,E, =kl X h{dic, + ^bh,) = U(^iCi+^6A,).

Their mm, or tlic solidity of the half-section, is

ll{dc-\- d,c^ + dc, + hh + hhK). (1)

Next, suppose that the diagonal runs from A to B^ . In this case, through B, draw the planes B, E, E, B, A E, and B^EF {not rep- resented in the figure), dividing the half-section again into three quadrangular pyramids, having for their common vertex the point Bi , and for their bases the planes A A, E^ E, E E^ F^ F, and A B FE For the areas of these bases -vve have

Area of ^ ^1 , ^, ^ = U^^ ^: X {A E -{- A^E^) ^ ^l {^ + c^), " '' EE^FiF =EFx EE^ =h^h

» '' ABFE =^AExd-{-^EFxh =^dc-\- ^bh;

and for the perpendiculars from Bi on these bases, produced when necessary,

102 EARTH- WORK.

Perpendicular on A Ai E^ E = E^ G^ = d^ « « ABFE = E El = I.

Tiin {Tab. X. 52) the solidities of the three pyramids are

Bi-AAiEiE= ^di X hl{c + ci) =hl{chc-\-diCi).

Bi-EEiF^F = ^hi X k^'l = lib hi,

Bi- ABFE =11 X ^{dc + ^bh) = \l{dc-\- \bh).

Their sum, or the solidity of the' half-section, is

\l{dc + diCi + dic -\-bhi + hbh). (2)

We have thus found the solidity of the half-section for both direc tions of the diagonal. Let us now compare the results (1) and (2), and express them, if possible, by one formula. For this purpose let (1) be put under the form

ll[dc + diCi-^dci J^lb[h+hi 4-^)1,

and (2) under the form

il[dc + d,ci + dic-^\b [h + hi + hi)\.

The only difference in these two expressions is, that dci and the last h in the first, become di c and Aj in the second. But in the first case, c, and h are the heights at the extremities of the diagonal, and d is the distance out corresponding to h ; and in the second case, c and hi are the heights at the extremities of the diagonal, and di is the distance out corresponding to hi. Denote the centre height touched bij the diagonal by C, the side height touched by the diagonal by H, and the distance out cor- responding to the side height H by D. We may then express both c/c, and dichy D C, and both h and hi by //; so that the solidity of the half-section on the right of the centre line, whichever way the diago- nal runs, may be expressed by

\l[dc^diCi -^DC-\-^b[h-^hi + H)\. (3)

To obtain the contents of the portion on the left of the centre line, we designate the quantities on the left by the same letters used for cor- responding quantities on the right, merely attaching a (') to them to distinguish them. Thus the side heights are h' and h'l , and the dis- tances out d' and d'l , while Z), C, and H become Z)', C, and H'. The solidity of the half-section on the left may therefore be taken di- rectly from (3), which will become

CENTRE AND SIDE HEIGHTS GIVEN.

io;j

Finally, by uniting (3) and (4), ^vc obtain ilie following formula for the solidity of the whole section between two stations j^ ^-^ U{{d-\-d')c-^r{d,^cl\)c,^DC-\-D'C<-\-'^h{h-{-

Example. Given / = 100, 6 = 18, and the remaining data, as ar langcMl in the first six columns of the following tabic. The first col- i.nn gives the stations ; the fourth gives the centre heights, namely, c -- 13.6 luul ci =- 8 ; the two columns on the left of the centre heights give the side heights and distances out on the left of the centre line of tlie road, and the two columns on the right of the centre heights give the side heights and distances out on the right. The direction of the diagonals is marked by the oblique lines drawn_^from h' = 8 to Cj =- 8 and from c =^ 13. 0 lo //^ ^= 12.

Sta.

0

I

d'.

21 15

8\ 4

c.

h.

10 ^^12

d.

24

27

' d + d'.

(d + d^)c.

D' C 1G8

DC.

13.6 \

^ 8.0

45

42

612 336

367.2

12

12 168 20 367.2 54 X 9 = 486

6)1969.2(

3

32820.

To apply the formula, the distances out at each station are added together, and their sum placed in the seventh column ; these sums, multiplied by the respective centre heights, are placed in the eightli column ; the product off/' == 21 (which is the distance out correspond- inc^ to the side height touched by the left-hand diagonal) by c, = 8 (which is the centre height touched by the same diagonal) is placed m the ninth column, and the similar product of c/j = 27 by c = 13.6 is placed in the last column. The terms in the formula multiplied by ^ b are all the side heights, and in addition all the side heights touched by diagonals, or 8 + 4 + 10 + 12 + 8 + 12 = 54. Then by sub- stitution in the formiila, we have S == h X 100 (612 + 336 + 168 + 867.2 + 9 X 54) =- 32,820 cubic feet.*

* The example here given is the same as that calculated in Mr. Borden's " Sya-

104 EARTH -WORK.

By applying the rule given in the note to § !'21, we see that the sar- face on the left of the centre line in the preceding example is a plane since 13.6 8 : 8 4 = 21 : 15. The diagonal on that side might, therefore, be taken either way, and the same solidity would be ob- tained. This may be easily seen by reversing the diagonal in this ex- ample, and calculating the solidity anew. The only parts of the for- mula affected by the change are D' C and ^b H'. In the one case the sum of these terms is 21 X 8 + 9 X 8, and in the other 15 X 13.6 + 9X4, both of which arc equal to 240.

123 Problem. To find the solidity S of any number n of succes- sive sections of equal length.

Solution. Let c, Cj , Co , c^, &c. be the centre heights at the succes- sive stations; /(. lii , h., , h^ , &c. the right-hand side heights; h', li\ , A'o , Zi'o , .fcc. the left-hand side heights ; (/, t/j , c/., , d^ , &c. the distances out on the right ; and t/', d\ , d'^ , d'^ , &c. the distances out on the left. Then the formula for the solidity of one section 122) gives for thp solidities of the successive sections

\l[{d-\-d')cJr{<-h +^'i)c, ^DC+D' C'-\-hb{h + h,-^ H-\. h[-\-h\^H%

\l[[d^J^d\)c, ^{d.-\-d>.)c. + D, Ci + D\C\-^^b{h^ +A2-H ZTi + A'. + A'o + H'OJ,

G I \{dn + J'o) c, + ((/3 + c/'a) C3 + D. a + Z)'. C'2 + i 6 {h. + A3 -f H.-i-h', + h>,.^H'.)l

"^nd so on, for any number of sections. For the solidity of any num- ber n of sections, we should have g / multiplied by the sum of n paren- theses formed as those just given. Hence

^ a5- I / (c?+ cZ') c + 2 {d,-\- d\)cy-\-2 {d., + f/'^) Co . . . -f {d„ + d'„) c„ + DC+ D'C> + Z)iCi -I- D\ C\ + B.C. + D'.C. + &c.

4- ^ 6 i /i + 2 Ai + 2 /?., + Ih, + ^+ i/i + ZTo + &c.

I + /i'+ 2 /t'i+ 2 A'o . . . + It'n + H'-\-H\-\-H'. + &.C.

tem of Useful Fonnulne, &c ," page 187. It will be seen, that his calculation make? the solidity 32,460 cubic feet, which is 360 cubic feet less than the result above. This difference is owing to the omission, by Mr. Borden's method, of a pyramid in- closed by the four pyramids, into which the upper portion of the right-hand hall section is by that method divided.

CKNTRE AND SIDE HEIGHTS GIVEN.

105

Example. Given / = 100, b = 28, and the remaining data as given in the first six columns of the following table.

'Sta. 0

d'.

k'.

c.

h.

d.

17

2 2

2

17

1

18.5

3 >4_

5

21.5

2

20

4-^ ^5^

^6

23

3

23

6 -^^6 ..^

'"•s

26

4

21. .5

5-^0,^0

>7

24.5

5

20

4 -^U^ G /

A

20 ,

6

15.5

1-^

i^

3

18.5

d + d'

25

22

90

69 102

171 X 14

35

30

37

T02

2394

2394 6)6212

103533 cubic feet.

The data in this table are arranged precisely as in the example for cal- culating one section 122), and the remaining columns are calculated as there shown. Then, to obtain the first line of the formula, add all the cumbers in the column headed {d-\- d') c, making 1389, and after- wards all the numbers except the first and the last, making 1185. The next line of the formula is the sum of the columns D' C and D C, which give respectively 605 and 639. To obtain the first line of the quantities multiplied by \b^ add all the numbers in column A, making 35, next all the numbers except the first and the last, making 30, and lastly all the numbers touched by diagonals (doubling any one touched by two diagonals), making 37. The second line of the quan- tities multiplied by ^6 is obtained in the same way from the column marked A'. The sum of these numbers is 171, and this multiplied by 16=14 gives 2394. "We have now for the first line of the formula 1389 + 1185, for the second 605 + 639, and for the remainder 2394.

100 By adding these together, and multiplying the sum by 5/ = -g- , we

get the contents of the six sections in feet.

124. When the section is partly in excavation and partly in embank- ment, the preceding formula? are still applicable ; but as this applica- tion introduces minus quantities into the calculation, the following method, similar in principle, is preferable.

125. Problem* Given the ividlhs of an excavation at the road-bed

6

106

EARTH-WORK.

AF = w and Ai F, = Wi {Jig. 53), the side heights h and h^.the lenfftk of the section /, arid the direction of the diagonal, to find the solidity S of the excavation, when the section is partly in excavation and partly in em- bankment.

Fig. 53

Solution. Suppose, first, that the surface is divided into two trian gles by the diagonal B A^. Through B draw the plane BA^F,, dividing that part of the section which is in excavation into two pyra- mids B-AAiFiF and B-AiB^ F^ , the solidities of which are

B - A Ai F, F = I h X k ^ {lo + ivi) = ll{ioh -\- wi h),

B-AiBiFi =^lx^ioihi =llwihi.

The whole solidity is, therefore,

S = kl {wh -\- ivi Aj, + it'i h).

Next, suppose the dividing diagonal to run from Ato Bi. Through Bi draw a plane BiAF (not represented in the figure), dividing the excavation again into two pyramids, of which the solidities are

Bi-AAiF^F^^hi X hl{io-\-Wi) = \l{ioh + ^o^h)y Bi-ABF =^lxh^h =11 wh.

The whole solidity is, therefore,

S = ll{wh + Wihi + lohi).

The only diff'erence in these two expressions is. that iVj h in the first becomes v;/«i in the second. But in the first case the diagonal touch- es io\ and h, and in the second case it touches iv and h^. If, then, we designate the width touched by the diagonal by W, and the height touched by the diagonal by H, we may express both Wi h and tv h^ by WH; so that the solidity in either case may-be expressed by

CENTRE AND SIDE HEIGHTS GIVEN.

lOT

S^ll{ivh + iv,h, + WII).

Corollary. When several sections of equal length succeed one another, the whole may be calculated together. For this purpose, the preceding formula gives for the solidities of the successive sections

ll{ivh + it'iAj + IF//),

ll(w,h, + H',/2o+ TF1//1),

and so on for any number of sections. Hence for the solidity of any number n of sections we should have

E^ S=ll{ivJi + 2ii\ /ii -f- 2 1^3 /to .... 4- Wn hn -f WH -\- Wi H^ -I- WzH.^-^- &c.)

Example. Given I = 100, and the remaining data as given in the irst three columns of the following table.

Station.

10.

h.

ich.

WH.

0

2

/l

2

1

8<

6

48

8

2

10.^

^7

70

56

3

13^

■^7

91

70

4

9

"^4

36

52

247 209 186

186

6)642

10700.

The fourth column contains the products of the several widths by the corresponding heights, and the next column the products of those widths and heights touched by diagonals. The sum of the products in the fourth column is 247, the sum of all but the first and the last is 209, and the sum of the products in the fiftli column is 186. These three sums are added together, multiplied by 100, and divided by 6, according to the formula. This gives the solidity of the four sections = 10700 cubic feet.

126. When the excavation docs not begin on a line at right angles lo the centre line, intermediate stations are taken where the excava- tkn b'^gins on each side of tlie road-bed, and the section may be calcu-

I Ob

EARTH-WORK.

[ated as a pyramid, having its A'ertex at the first of these points, and for its base the cross-section at the second. The preceding method gives the same result, since w and h in this case become 0, and reduce ;he foraiula to S ^^ i I w^ h^ . The same remarks apply to the end of an excavation.

C. Grou7id very Irregular,

127. Prol>l€*m. To find the solidity of a section^ when the ground is very irregular.

Fig. 54.

^ution. Let A HE FE - Ar CD Bi F^ Ei (fig. 54) represent one side of a section, the surface of -which is too irregular to be divided into two planes. Suppose, for instance, that the ground changes at H^ C, and Z), making it necessary to divide the surface into five trian- gles running from station to station.* Let heights be taken at /7, C, and Z), and let the distances out of these points be measured. If now we suppose the earth to be excavated vertically downward through the side line B B^ to the plane of the road-bed, we may form as many vertical triangular prisms as tliere are triangles on the surface This iviM be made evident by drawing vertical planes through the sides

* It will often be necessary to introduce intermediate stations, in order to make *he subdivision into triangles more conveniently and accurately.

GROUND VERY IRREGULAR. 109

A C, H C\ FID, and HB^ . Then the solidify of the kiJf-section will be equal to the sinn of these prisms, minus the triangular mass BFG-

BiFi Gi .

The horizontal section of tlic prisms may be found from the distan- ces out and the length of the section, and the vertical edges or heights are all known. Hence tl>e solidities of these prisms may be calculated

by § 115.

To find the solidity of the portion BFG-B^ F^ Gx , which is to be deducted, rci)resent the sloi)e of the sides by s {^ 102), the heights at B and B^ by h and h^ , and the length of the section by I Then we have F G ^ s /t, and Fi Gi = shi. Moreover, tlie area of B F G - j s /r, and that of B^F^G^^^s h^^. Now as the triangles B F G and L'l F, Gi are similar, the mass required is the frustum of a pyra- mid, and the mean area is yj s /t^ x i s /'i^ = 3 '^^ ^' ^'i '^'^^^" (Tab. X 53) the solidity is B F G - B^ F^ G^^ U s (//-' + h^^ + h h^).

Example. Given Z = 50, 6 =18, s = i , the heights at .1, //, and B respectively 4, 7, and 6, the distimces yl i/ = 9 and HB = 9, the heights at A^ , C, D, and B^ respectively C, 7, 9, and 8, and the distan- ces ^li C =4, CD =^ 5, and Z)/ii = 12 Then the horizontal sec- tion of the first prism adjoining the centre line is ^ / X A^C, since the distance ^i C is measured horizontally ; and the mean of the three heighta is ^4 + 6 + 7) = ^ X 17. The solidity of this prism is therefore ^ / X ^li C X ^ X 17 = b ^ X 4 X 17, that is, equal to \l multiplied by the base of the triangle and by the sum of the heights. In this way we should find for the solidity of the five prisms

1/(4 X 17 + 9 X 18 + 5 X 23+ 12 X 24 + 9 X 21)= 1/ X 822.

For the frustum to be deducted, we have

^/ X 1(62 + 8^ + 6X8) =U X 222. Hence the solidity of the half-section is

\l (822 222) = g X 50 X 600 = 5000 cubic feet.

128. Let us now examine the usual method of calculating excava- tun, when the cross-section of the ground is not level. This method consists, first, in finding the area of a cross-seetion at each end of the mass ; secondly, in finding the height of a section, level at the top, equivalent in area to each of these end sections ; thirdly, in finding from the average of these two heights the middle area of the mass ;

110 EARTH-WORK.

and, lastly, in applying the prismoidal formula to find the contents The heights of the equivalent sections level at the top may be found approximately by Trautwine's Diagrams,* or exactly by the following method. Let A represent the area of an irregular cross-section, 6 the width of the road-bed, and s the slope of the sides. Let x be the re- quired height of an equivalent section level at the top. The bottom of the equivalent section will be b, the top 6 -f 2 s ar, and the area will be the sum of the top and bottom lines multiplied by half the height o ^.r (2 6 + 2st) = s X- -\- b X. But this area is to be equal to A Therefore, s x- -\- b x -^ A, and from this equation the value of a: may be found in any given case.

According to this method, the contents of the section already calcu- lated in § 122 will be found thus. Calculating the end areas, we find the first end area to be 387 and the second to be 240. Then as s is here i and 6=18, the equations for finding the heights of the equiva- lent end sections will be ia:^ + 18x = 387, and lx^-\- ISx = 240 Solving these equations, we have for the height at the first station x = 11.146, and at the second, x = S. The middle area will, there- fore, have the height ^ (11.146 + 8) = 9.573, and from this height the middle area is found to be 309.78. Then by the prismoidal formula (t 113) the solidity will heS^l X 100 (387 + 240 + 4 X 309.78) 31102 cubic feet.

But the true solidity of this section was found to be 32820 cubic feet, a difference of 1718 feet. The error, of course, is not in the pris- moidal formula, but in assuming that, if the earth were levelled at the ends to the height of the equivalent end sections, the intervening earth might be so disposed as to form a plane between these level ends, thus reducing the mass to a prismoid. This supposition, however, may sometimes be very far from correct, as has just been shown. If the diagonal on the right-hand side in this example were reversed, that if if the dividing line were formed by a depression, the true solidit} found by § 122 would be 29600 feet ; whereas the method by equiva- lent sections would give the sam.e contents as before, or 1502 feet too much.

D. Correction in Excavation on Curves 129. In excavations on curves the ends of a section are not parallel

* A New Method of Calculating the Cubic Contents of Excavations and Embank ments by the aid of Diagrams. By John C. Trautwine

CORRECTION IN EXCAVATION ON CURVES.

IIJ

to each other, but converge towards the centre of the curve. A section between two stations 100 feet apart on the centre line will, therefore, measure less than 100 feet on the side nearest to the centre of the curve, and more than 100 feet on the side farthest from that centre. Now in calculating the contents of an excavation, it is assumed thai the ends of a section are parallel, both being perpendicular to the chord of the curve. Thus, let figure 55 represent the plan of two sections ol

Fig. 55.

an excavation, EF G being the centre line, AL and Cil/the extreme side lines, and 0 the centre of the curve. Then the calculation of tlie Qrst section would include all between the lines .4 1 Ci and B^Di\ ^-hile the true section lies between A C and B D. In like manner, the calculation of the second section would include all between HK and NP , while the true section lies between BD and L M. It is evident, therefore, that at each station on the curve, as at jP, the calculation is too great by the wedge-shaped mass represented hy KFD^, and too

Fig. 56

^n

■mull by the mass represented by BiFB These masses balance

112 EARTH-WORK.

each other, when the distances out on each side of the centre line are equal, that is. when the cross-section may be represented hy AD F RE (fig. 56). But if the excavation is on the side of a hill, so that the distances out differ very much, and the cross-section is of the shape AD FEE, the difference of the wedge-shaped masses may require consideration.

130. Problem. Given the centre height c, the greatest side height h, the least side height h', the greatest distance out d, the least distance out d', and the ividlh of the road-bed b, to find the correction in excavation C, at any station on a curve of radius R or defection angle D.

Solution. The correction, from what has been said above, is a trian- gular prism of which B FR (fig. 56) is a cross-section. The height of this prism at B (fig. 55) is Bi H, the height at A' is R^ S, and the height at F is 0. Bi 11 and R^ S, being veiy short, are here considered straight lines. Now we have the cross-secticn B FR = FB E G Fr'^EG = i^cd + ibh) - iUd' + ibh') = hc{d - d<) -f ih{h h'). To find the height Bi H, we have the angle B F 11 = B FBi = D, and therefore Bi H = 2 HF sin. D = 2d s\n. D. In like manner, R^ S = KD^ = 2KF sin. D =^ 2d' sin. D. Then since the height at Fis 0, one third of the sum of the heights of the prism will be f (d + fZ')sin. D, and the correction, or the solidity ol the prism, will be 115)

^ C=[hc{d- d') + ib{h-h')] X f(fZ-fcZ')sin. Z).

When R is given, iind not D, substitute for sin. D its value (§9)

50 Bin. D =^ jf . The correction then becomes

^ C^[U{d-d')-^-\bih-h')]x'^^^^±^.

This correction is to be added, when the highest ground is on the convex side of the curve, and subtracted, when the highest ground is on the concave side. At a tangent point, it is evident, from figure 55, that the correction will be just half of that given above.

Ercanple. Given c = 28, h ^ 40, h< = 16, f? = 74, d' = 38, b = 28, and R. = 1400, to find C. Here the area of the cross-section BFR -=

- (7-i 38) 4- - (40 16) = 672, and one third of the sum of the

. 100(74 + 38) 8 ^ fi7o V - «

heights of the prism is 3 ^ ^^qq -= 3 Hence C = 672 X 3 «

792 cubic feet.

CORRECTION IJ\ EXCAVATION ON CURVES. 113

131. When the section is partly in excavation and partly in em- bankment, the cross-section of the excavation is a triangle lying tvlioUy on one side of the centre line, or partly on one side and partlj on the otlier. The surface of the ground, instead of extending from B to D (fig. 56), will extend from B to a. point between G and E, or to a point between A and G. In the first case, the correction will be a triangular prism lying between the lines B^ /'and fl F (fig. 55), but not extending below the point F. In the second case, the excavation extends below F, and the correction, as in § 129, is the difference be- tween the masses above and below F. This difference may be ob- tained in a very simple manner, by regarding the mass on both sides of i^as one triangular prism the bases of which intersect on the line G F (fig. 56), in whicli case the height of the prism at the edge be- low /'""must be considered to be ininus, since the direction of this edge, referred to either of the bases, is contrary to that of the two others. The solidity of this prism will then be the difference required.

132. Prol>8eill. Given the width of the excavation at the road-bed w, the ividth of the road-bed 6, the distance out d, and the side height A, to find the correction in excavation C, at any station on a curve of radius R or deflection angle D, when the section is partly in excavation and partly in embanlcinent.

Solution. When the excavation lies wholly on one side of the centre line, the correction is a triangular prism having for its cross-section the cross-section of the excavation. Its area is, therefore, ^ iv h. The licight of this prism at B (fig. 56) is 130) B^ IT = 2 H F s\r\. D = 2 d sin. D. In a similar manner, the height at E will be 2 G E sin. D = b sin. Z>, and at the point intermediate between G and j5J, the dis- tance of which from the centre line is ^t ly, the height will be 2 {^b 16') sin. D = (b 2 iv) sin. D. Hence, the correction, or the solid- ity of the prism, will he {^ 115) C = ^whxh {2d-i-b-{-b 2iv) sin. Z) -= ^loh X i {d -\- b lo) sin. D.

When the excavation lies on both sides of the centre line, the cor- rection, from what has been said above, is a triangular prism having also for its cross-section the cross-section of the excaration. Its area will, therefore, be ^ivh. The height of this prism at Bis also 2dsin.D, and the height at E, b sin. D ; but at the point intermediate between A and G. the distance of which from the centre line \s w ^b, the height will be 2 (iv ^b) sin. Z) = (2 lo b) sin. D. As this height is to be considered minus, it must be subtracted from the others, and the coriection required will be C=^wkxhi2d-\-b 2w-\-b) sin. D

114 EAETH-WORK.

^ ^wh X I (^ + t 't') sin. D. Hence, in all cases, when the sec tion is partly in excavation and partly in embankment, we have the formula

1^- C=^'u;hX ^ {d-\-b— iv) sin. D.

When R is given, and not D, substitute for sin. D its value 9)

50 sin. D = -^ . T^e correction then becomes

This correction is to be added, when the highest ground is on the convex side of the curve, and subtracted when the highest ground is on the concave side. At a tangent point the correction will be just half of that given above.

Example. Given if; = 17, 6 = 30, c? = 51, A = 24, and 22 = 1600,

to find C. Here the area of the cross-section is ^wh = \7 % 12 =

. If0(d+b—w) 204-. and one third of the sum of the heights of the prism is g^j

..^ ^^"^^^^^ = l Hence C = 204 X | = 272 cubic feet.

1.33. The preceding corrections (§130 and ^32) suppose the length of the sections to be 100 feet. If the sections are shorter, the angle B FH (fig. 55) may be regarded as the same part of D that FG is ol 100 feet, and Sj FB as the same part of D that jEJFis of 100 feet The true correction may then be taken as the same part of C that the mm of the lengths of the two adjoining sections is of 200 feet.

TABLE I.

UADII, ORDINATES, DEFLECTIONS,

AND

ORDINATES FOR CURVING RAILS.

Jroraiiila for Radii, ^ 10 ; for Ordinates, § 25 ; for Dcflectlong, $ 1*J

for CuiTiug Riiils, § 29.

lib

TABLE

I. RADII

, ORDINATES, DEFLECTIONS,

Degree.

Radu.

Ordinates.

Tangent Deflec-

Chord Deflec-

Ordinates for Rails.

12^

25.

37i.

50.

tion.

tion.

18.

20.

O (

0 5

6S754.94

.008

.014

.017

.018

.073

.145

1 .001

.001

10

34377.48

.016

.027

.034

.036

.145

.291

.001

.001

15

22918 33

.024

.041

.051

.055

.218

.436

.002

.002

20

171SS.76

.032

.055

,063

.073

.291

.582

.002

.003

251

13751.02

mo

.063

.085

.091

.364

.727

.003

.004

30

11459.19

.013

.032

.102

.109

.4.36

.873

.004

004

35

9322. 1-?

.056

.095

119

.127

.509

1.013

.004

.005

40

8594.41

.064

.109

.136

.145

.532

1.164

.005

.006 1

45

7639.49

.072

.123!

.153

.164

.654

1.309

.005

.007 1

50

6375.55

.080

.136

.170

.132

.727

1.454

.006

.007

55

6250.51

.037

.150

.187

.200

.800

1.600

.006

.008

1 0

5729.65

.095

.164

.205

.218

,873

1.745

.007

.009

5

523S.92

103

.177

.222

.236

,945

1.891

.008

.009

10

4911.15

.111

.191

.239

.255

1,018

2.036

.008

.010

15

45S3.75

.119

.205

.256

.273

1.091

2.182

.009

.011

20

4297. 2S

.127

.218

.273

.291

1.164

2.327

.009

.012

25

4044.51

.135

.232

.290

.309

1 .236

2.472

.010

.012

30

33 19. S3

.143

.245

.307

.327

1.3(19

2.613

.011

.013

35

36 IS. SO

.151

.259

..324

.345

1 332

2.763

.011

.014

) 4C

3437.87

.159

.273

..341

.364

1.454

2.909

.012

.015

45

3274.17

.167

.236

.358

.332

1.527

3.054

.012

.015

50

3125.36

.175

.300

.375

.400

1.600

3.200

.013

.016

55

2939.43

.133

.314

.392

.418

1.673

3.345

.014

017

9 0

2S64.93

.191

.327

.409

.436

1.745

3.490

.014

.017

5

2750.35

.199

.341

.426

.455

1.818

3.636

.015

.013

in

2644.53

.207

.355

.443

.473

1.391

3.781

.015

.019

15

2546.64

.215

.363

.460

.491

1.963

3.927

.016

.020

20

2455.70

.223

.3c2

.477

.509

2.036

4.072

.016

.020

25

2371.04

.231

.395

.494

.527

2.109

4.218

.017

.021

30

2292.01

.239

.409

.511

.545

2.1S1

4.363

.018

.022

35

2213.09

.247

.423

..528

.564

2.251

4.503

.018

.023

40

2143.79

.255

.436

..545

.582

2.327

4.654

.019

.023

45

2033.6S

.263

.450

.562

.600

2.400

4.799

.019

.024

50

2022.41

.270

.464

.530

.613

2.472

4.945

.020

.025

55

1664 64

.278

.477

.597

.636

2.545

5.090

.021

.025

3 0

1910.03

.286

.491

.614

.655

2.6 IS

5.235

.021

.026

5

1358.47

•294

.505

.631

.673

2.690

5..381

.022

.027

10

1309.57

.302

.518

.643

.691

2.763

5.526

.022

.028

15

1763 13

.310

..532

.665

.709

2.336

5.672

.023

! .023

20

1719.12

.318

.545

.682

.727

2.908

5.817

.024

1 .029

25

1677.20

.326

.559

.699

.745

2.9S1

5.962

.024

1 .030

30

1637.28

.3-34

.573

.716

.764

3.054

6.108

.025

j .031

35

1599.21

.342

.536

.733

.782

3.127

6.2.53

.025

.031

40

1 562.SS

.3.50

.600

.750

.800

3.199

6.398

.026

, .032

45

1523.16

.353

.614

.767

.818

3.272

6.544

.027

I .033

50

1494.95

.366

.627

.784

.8.36

3.345

6.639

,027

j .033

55

1463 16

.374

.641

.801

.855

3 417

6,835

.028

.034

4 0

(432.69

.332

.655

.818

.873

3.490

6.930

.028

.035

5

1403 46

.390

.663

.835

.891

3.563

7.125

.029

.036

10

1375.40

.398

.632

.852

.909

3.635

7.271

.029

; .036

15

1343.45

.406

.695

.869

.927

3.703

7.416

.030

.037

20

1.3.22. .53

.414

.709

.836

.945

3.731

7..561

.031

.033

25

1297.53

.422

,723

.903

,964

3.3.53

7.707

.031

! .039

30

1273.57

.430

.736

.921

.932

3.926

7.352

.032

.039

35

12.50.42

.438

.750

.933

1.000

3.999

7.997

.032

.040

40

1223.11

.446

.764

.955

1.018

4.071

8.143

.033

.041

45

1206.57

.454

.777

.972

1.036

4.144

8.2.8S

.034

.041

50

1185.78

.462

.791

.939

1.055

4.217

8,4:33

.034

.042

55

1165.70

.469

.805

1.006

1.073

4.239

8.579

.035

.043

5 0

1146.23

.477

.818

1.023

1.091

4.362

8.724

.035

.044

AND^ORDINATES FOR CURVING RATI S.

117

Degree.

Radii.

o / 5 5

10 15!

201 25 30 35 40 45 50 55

6 0 5

10 15 20 25 30 35 40 45 50 55

7 0

5 10 15 20 25 30 35 40 45 50 55

8 0 5 10 15 20 25 30 35 40 45 50 55

9 o! 5 10 15 20 25 30 35 40 45 50 55

Ordinates.

12i.

i 127.50

1 [09.33

1091.73

1U74.68

1058.16

1042.14

1026.60

1011.51 996.87 982.61 968.81

955 37 912.29 929 57 917.19 905.13 893.39 SSI. 95 870.79 859.92 849.32 838.97 828.88

819.02 809.40 800.00 790.81 781. S4 773.07 764.49 756.10 747.89 739.86 732.01 724.31

716.78 709.40 702.18 695.09 688.16 681.35 674.69 66S.15 661.74 655.45 619.27 643.22

637.27

631.44

625 71

620.09

614. r,6

609.14

603.80

598.57

593.42

588.36

583.38

578.49

25.

.4;

.493

501

.509

.517

.525

.533

.541

.549

.557

.565

37*.

60.

10 0 573.69

.581

.589

..597

.605

.613

.621

.629

.637

.645

.653

.66

.669 .677 .685 .693 ,701 .709 .717 .725 .733 .740 .748 .756

.764

.772 .780 .788 .796 .804 .812 .820 .828 .836 .844 .852

.860 .868 .876 .884 .892 .900 .908 .916 .924 ,932 .940 .948

.956

.832

.846 1 ,859 .873! .887 .900 ,914 .928 ,941 .955 .96^

,982

,996 1,009 1,023 1.037 1,050 1.061 1.078 1.091 1.105 1.118 1.132

1.146 1.1.59 1.173 1.187 1.200 1.214 1.228 1.242 1.255 1.269 1.283 1.296

1.310 1,324 1,337 1,351 1.365 1.378 1.392 1,406 1.419 1.433 1.447 1,460

1.040 1,057 1,074 1.091 1.108 1.125 1.142 1.1.59 1.176 1.193 1.210

1.228 1.24.''i 1.262 1.279 1.296 1.313 1 .330 1.347 1.364 1.381 1.398 1.415

1.432 1.449 1.466 1.483 1.501 1.517 1.535 1.552 1.569 1.586 1.603 1.620

1.637 1.6.54 1.671 1.688 1.705 1.722 1.739 1.757 1.774 1.791 1.808 1.825

Tangent Petiec- .tion.

1.109 1.127 1.146 1.164 1.182 1 200 1.218 1.237 1.255 1 .273 1.291

1.309 1.327 1.346 1.364 1.382 1.400 1.418 1.437 1 .455 1.473 1.491 1.510

1 .528 1.546 1.564 1 .582 1 .600 1.619 1.637 1,655 1,673 1.691 1.710 1.728

1.746 1.764 1.782 1.801 1.819 1.8.37 1.8.55 1.873 1.892 1.910 1.928 1.940

1.474 1.488 1.501 1.515 1,529 I, .54 2 1,.556 1,570 1.583 1.597 1.611 1.624

1 .638

1.842 1.859 1.876 1.893 1.910 1.927 1.944 1.961 1.979 1.996 2.013 2.030

2.047

1.965 1.983 2.001 2.019 2.037 2.056 2.074 2.092 2.110 2.128 2.147 2.165

2.183

Chord

Ufllcc-

tion.

Oldir.ates fen- Rails.

4.435 4.507 4.580 4.653 4.725 4.798 4.870 4.943 5.016 - 5.088 5.161

5.234

5.306

5..379

5.451

5.524

5..597

5.669

5.742

5.814

5.8S7

5.960

6.032

6.105 6.177 6.250 6.323 6.395 6.468 6.540 6.613 6.685 6,758 6.831 6.903

6.976 7.048 7.121 7.193 7.266 7,338 7.411 7.483 7,556 7,628 7.701 7.773

.7.846 7 918 7.991 8.063 8.136 8.208 8.281 8.353 8.426 8.49S 8.571 8.643

8.716

8.869

9.014

9.160

9.305

9.450

9.596

9.741

9.8.-^6

10.031

10.177

10.322

10.467 10.612 10.758 10.903 11.048 11.193 11.339 11.484

11.774 11 919 r2.u65

12.210

12.355

12.500

12.645

12.790 j

12.936

13.081

13.226

13.371

13.516

13.661

13.806

13.951

14.096

14.241

14.387

14.532

14.677

14.822

14.967

15.112

15.257

15.402

15.547

15.692 15.837 15.9S2 16.127 16.272 16.417 16.562 16.707 16.852 16.996 17.141 17.286

17.431

18.

.036 .037 .037 .038 .038 .039 .039 .n4() .041

.(!41

.0-/2

.042

.043

.044

.044

.04

.04

.046

.047

.047

.(48

.048

.049

.049

.050

.051

.051]

.052

,052

,053

.054

,054

,055

.055

.056

20.

'I

.057

.057

.058

.058

.059

.0591

.060

.061

.061

.062

.062

.063

.064

.064

.065

.065

.066

.0661

.0671

.068

.0681

.069

.069

,070

.044 ,045 ,046 ,047 ,047 .048 .049 .049 .050 ,051 ,052

,052 .053 .054 .055

.055 .056 .057 .057 .058 .059 .060 .060

061

.062

.063

.063

.064

.065

.065

.066

.067

.068

.068

.069

070 ,070 ,071 ,072 .073 .073 .074 .075 .076 .076 .077 .078

.078 .073 .080 ,081 .081 .082 .083 .084 .084 .085 .0>6 ,086

.071 .087

118

TABLE I. RADII, ORDINATES, DEFLECTIO.NS, i^C.

r Degree.

Radii.

Ordinates.

Tangent Deflec- tion.

' Chord Deflec- tion.

Ordinates for Rails.

12^.

25.

37*.

50.

18.

20.

o / lU IJ

564.31

.97-2

1.665 2.031

2.219

8.S6C

17.721

.072

.039

2]

555. '23

.933 1.693 2.115 2.2.56

9.OO0

13.01 1

.073

.090

33

546.44

l.OM l.720l 2.149; 2.292

9.150

13.300

.074

.092

40

537.92

1.020 1.743

2.131

2.329

9.295

13.590

.075

.093

50

529.67

1.036

1.775

2.213

2.355

9.440

13.330

.076

.094

11 0

521.67

1.052

1.302

2.252' 2.402

9.535

19.169

.073

.098

10

51.3.91

I mi

1.S30

2.236: 2.4.33

9.729

19.459

.079

.097

20

506.33

1.0S4

1 .857

2.320

2.475

9.374

19.743

.030

.099

30

499.136

l.ldOl 1.334

2.3>1

2.511

10.019

20.0:33

.031

.100

40

491.96

l.llG 1.912

2.339

2.;547

10.164

20.327

.032

.102

50

4S5.05

1.132 1.9:33

2.423

2.531

10.:303

20.616

.034

.103

12 0

47S.ai

1.143

1.967

2.457

2.620

10.453

20.906

.035

.105

10

471.31

1.164

1.994

2.491

2.657

IO..597

21.195

.036

.106

20

465.46

1.130

2.021

2.525

2.693

10.742

21.434

.087

.107

30

459. 2S

I.I96I 2.049

2.560

2.730

10.337

21.773

.088

.109

40

4-53.26

1.212 2.076

2.594

2.766

11.031

22.063

.039

.110

50

447.40

1.223 2.104

2.623

2.303

11.176

22.-352

.091

.112

13 0

441.63

1J244 2.131

2.662

2.839

11.320

22.641

.092

.113

10

436. 12

1.260 2.159

2.697

2.376

11.465

22.930

.093

.115

20

430.69

1.277

2. 1 36

2.731

2.912

11.609

23.219

.094

.116

30

425.40

1.293

2.213

2.765

2.949

11.754

2:3.507

.095

.113

40

420.23

i.:3a9

2.241

2.799

2.935

11.393

23.796

.096

.119

50

41.5.19

1.325

2.263

2.3.3:3

3.022

12.013

24.035

.093

.120

14 0

410.23

1.341

2.296' 2.363

3.053

12.137

24.374

.099

.122

10

40.5.47

1.357

2.323

2.902

3.095

12.331

24.663

.100

.123

20

400.73

1.373

2.351

2.9.361 3.131

12.476

24.951

.101

.125

30

396.20

l.:3S9

2.373

2.970

3.163

12.620

25.240

.102

.126

40

391.72

1.405

2.406

3.005

3.204

12.761

25.523

.103

.123

50

337.34

1.421

2.4.33

3.039

3.241

12.903

25.317

.105

.129

15 0

333.06

1.4:37

2.461

3.073

3.277

1:3.0.53

26.105

.106

.131

10

373.33

1.4.53

2.4 S3

3.107

3.314

1:3.197

26.394

.107

.1.32

20

374.79

1.469

2.515

3.142

3.350

I3.:341

26.632

.103

.133

30

370.73

1.436

2..543

.3.176; 3.337

13.435

26.970

.109

.135

40

366.36

1.502

2.570

3.210 3.423

13.629

27.253

.110

.136

50

363.02

1.513

2.593

3.245

3.460

13.773

27.547

.112

.133

16 0

3.59.26

1..5.34

2.625

3.279

3.496

13.917

27.335

.113

.139

10

355. 59

1.550

2.6.53

3.313

3.5:33

14.061

23.123

.114

.141

20

351.93

1.566

2.630

3.317

3.569

14.205

23.411

.115

.142

30

a43.45

1.532

2.703

3.332 3.606

14.349

23.699

.116

.143

40

344 99

1.593

2.7.36

3.416 3.643

14.493

23.936

.117

.145

50

ail. 60

1.615

2.763

3.450

3.679

14.637

29.274

.119

.146

17 0

33S.27

1.631

2.791

3.435

3.716

14.731

29.562

.120

.143

10

335.01

1.617

2.313

3.519

3.7.52

14.925

29.3-50

.121

.149

20

3:31.82

1.663

2.346

3.-5.53

3.739

15.069

30.137

.122

.151

30

323.63

1.679

2.373

3.583

3.325

15.212

30 425

.123

.152

40

32-5.60

1.695

2.901

3.622

3 362

15.356

30.712

124

.154

50

322.59

1.711

2.923

3.656

3.393

15.500

31.000

.126

.155

18 0

319.62

1.723

2.956

3.691

3.935

15.643

31.237

.127

.1-56

10

316.71

1.744

2.933

3.725

3.972

1-5.737

31.574

.123

.153

20

313.36

1.760

3.011

3.7.59

4.003

15.931

31.361

.129

.159

30

311.06

1.776

3.0.39

3.794

4.045

16.074

32.149

.130

.161

40

303.30

1.792: 3.066 i

3.523

4.081

16.213

32.436

.131

.162

50

305.60

1.309

3.094

3.362

4.113

16.361

32.723

.133

.164

19 0

302.94

1.325

3.121

3.397

4.1.55

16.-505

33.010

.134

.165

10

3D0..33

1.341

3.149

3.931

4.191

16.643

33.296

.135

.166

20

297.77

1.357

3.177

3.965

4.223

16.792

a3.533

.1-36

.163

30

295.25

1.373

3.204

4.000

4.265

16.9-35

33.870

.137

.169

40

292.77

1.390

3.232

4.034

4.301

17.073

a4.157

.1-33

.171

50

290.33

1.906 3.2.59 j

4.069

4.333

17.222

34.443

.140

.172

20 0

237.91

1.922; 3.2371

4.103

4.374

17.365

34.730

.141

.174

TABLE II. LONG CHORDS.

119

TABLE II. LONG CHORDS. § 69.

Degree of Civrve.

2 Stations.

3 Stations.

4 Stations.

5 Stations.

.. ., 6 Stations. !

o t 0 10

200.000

299.999

399.993

499.996

599.993

20

199.999

.997

.992

.953

.970

30

.993

.992

.931

.962

.933

40

.997

.936

.966

.932

.832

50

.995

.979

.947

.894

.815

1 0

199.992

299.970

399.924

499.S43

599.733

10

.990

.959

.896

.793

.637

20

.956

.946

.865

.729

.526

30

.9S3

.932

.829

.657

.401

40

.979

.915

.789

.577

.260

oO

.974

.893

.744

.483

.105

2 0

199.970

299.378

399.695

499.-391

595.934 i

10

.964

.857

.643

.255

.7.50 1

20

.959

.SM

.5^36

.171

.5:50

30

.9.')2

.810

.524

•ai9

.336

40

.916

.733

.459

498.913

.106

50

.939

.756

.389

.778

597,662

3 0

199.931

299.726

399.315

49S.630

597.604

10

.924

.695

.2.37

.474

.331

20

.915

.652

.154

.309

.043

30

.907

.627

.Oft3

.136

596.740

40

.893

.591

398.977

497.955

.423

50

.833

.553

.882

.765

.091

4 0

199.S73

299.513

393.732

497.566

595.744

10

.563

.471

.679

.360

.353

20

.857

.423

.571

.145

.007

30

.846

.333

.459

496.921

594.617

40

.834

.337

.343

.639

.212

50

.822

.239

.223

.449

593.792

5 0

199.810

299.239

393.099

496.200

593.353

10

.797

.157

397.970

495.944

592.909

20

.733

AM

.837

.678

446

30

.770

.079

.709

405

591.963

40

.756

.023

.559

.123

.476

50

.741

293.9&1

.413

494.832

590.970

6 0

199.726

293.904

397.264

494.5^4

590.449

10

.710

.843

.110

.227

589.913

20

.695

.779

396.952

493.912

.364

30

.673

.714

.790

.553

533.300

40

.662

.643

.6-23

257

.221

50

.644

.579

453

492.917

537.623

7 0

199.627

298.509

396.278

492.563

537.021

10

.609

433

099

.212

536.400

20

.591

.3&1

395.916

491.347

535.765

30

.572

.239

.729

.474

.115

40

•553

.212

.533

.093

584.451

50

.533

.134

.342

490.701

533.773

8 0

.513

293.054

395.142

490.306

553.051

120

TABLE III. TABLE IV.

TABLE III.

CORRECTION FOR THE EARTH'S CURVATURE AND FOR REFRACTION. § 105.

D.

J.

D.

d.

D.

d.

D.

d.

303

.002

ISOO

.066

3300

.223

4--'00

.472

400

.0ft3

1900

.074

3 J 00

.237

4900

.492

500

.005

2CH30

.0S2

3^500

.25!

5000

.512

600

.007

2100

.090

36Q0

.266

5100

.533

700

.010

2200

.099

37(10

.2S1

5200

,554

800

.013

2300

.lOS

3S00

.2i;6

1 mUe

.571

900

.017

2400

.113

3900

.312

2 «♦

2.235

1000

.020

2500

.123

4000

.328

3 »<

5.142

1100

.025

2600

.139

4100

.345

4 «

9.142

3200

.030

2700

.149

4200

.362

5 «

14.284 {

1300

.035

2SitO

.161

4300

.370

6 "

20.563

1400

.040

2900

.172

4400

.397

7 "

27.996

1500

.046

3000

.1S4

4501

.415

8 "

36.566

1600

052

3100

.197

460 J

.434

9 «

46.279

1700

.059

3200

.210

4700

.453

10 "

57.135

TABLE IV.

ELEVATION OF THE OUTER RAIL ON CURVES.

§ 110.

Degree.

RT = 15

M = 20.

M = 26.

M = 80.

M = 40.

M = 50.

o

1

.012

.022

034

.049

.088

.137

2

.025

.044

.068

.099

.175

.274

3

.037

.066

.103

.143

.263

.411

4

.049

.033

137

.197

.351

.543

5

.062

.110

.171

.247

.433

.685

6

.074

.131

.205

.296

.526

.822

7

.0S6

.153

.240

.345

.613

.953

8

.099

.175

.274

.394

.701

1.095

9

.111

.197

.303

.443

.788

1.232

10

.123

.219

.342

.493

.876

L36S

TABLE V. TABLE VI.

121

TABLE V.

FROG ANGLES, CHORDS, AND ORDINATES FOR

TURNOUTS.

This table is calculated for g = 4.7, d =- .42, and S = 20'. For mula for frog angle F, and chord B F, § 50 ; for m, the middle or- dinate of B F, § 25 ; for ?/i', the middle ordinate for curving an 18 ft rail, § 29.

R.

imo

F.

BF.

in.

niK

R.

600

F.

BF.

m.

m'

g 27 ik

72.22

.651

.041

O 1

6 57

48

59.17

.727

.068

975

5 31 39

71.53

.655

.012

575

7 6

26

58.16

.7.33

.070

950

5 35 44

70.S3

.659

,043

550

7 15

40

57.12

.739

.074

925

5 39 59

71.11

.663

,044

525

7 25

33

56.05

,745

,077

900

5 44 24

69.3S

.667

,045

500

7 36

10

54.94

.752

,081

875

5 49 1

68.64

.671

.046

475

7 47

37

53.79

.758

.085

850

5 53 50

67.88

.676

,01S

450

8 0

1

52.61

.765

.090

825

5 53 52

67.10

.680

,049

425

8 13

30

51. 3r

.773

.095

ST)

6 4 9

66.30

.685

,051

400

S 23

14

50.09

.780

.101

775

6 9 41

6."'.49

.690

.052

375

8 44

26

48.75

.788

.103

750

6 15 30

64.65

.695

.054

350

9 2

20

47.35

.796

.116

725

6 21 37

63.80

.701

.056

325

9 22

16

45.88

.805

.125

700

6 28 4

62.92

.705

.058

300

9 44

39

44.34

.814

.135

675

6 34 52

62.02

.710

,060

275

10 10

1

42.72

.824

.147

650

6 42 4

61.09

.716

,062

250

10 39

6

41.00

.834

.162

625

L— ... . .

6 49 42

60,14

.721

.065

225

11 12

55

39.16

.845

.180

TABLE VI.

LENGTH OF CIRCULAR ARCS IN PARTS OF RADIUS

o

1

,01745

32925

19943

1

.00029

08882

08666

//

1

,00000

48481

36811

9.

.03490

65850

39.S87

2

.00058

17764

17331

2

,00000

96962

73622

3

.05235

98775

59830

3

.00087

26646

25997

3

.00001

45444

10433

4

,(;69S1

31700

79773

4

.00116

35528

34663

4

.00001

9-3925

47244

ri

.03726

64625

997 1 6

5

.00145

44410

43329

5

,00002

42406

84055

6

,10471

9755 1

19660

6

.00174

53292

51994

6

.00002

90.888

20,867

7

.12217

.30476

39603

7

,00203

62174

60660

7

.00003

39369

57678

8

.13962

63401

59546

8

,00232

71056

69326

8

,00003

87850

94489

9

.15707

96326

79190

J_

,00261

79933

77991

9

,00004

36332

31300

122

TABLE VII. EXPANSION BY HEAT.

TABLE VII.

EXPANSION BY HEAT.

Bodies.

323 to 2123.

lO.

Authority.

Platina,

.0003S42

.000004912

Ilassler

Gold,

,001466

.000003141

((

Silver,

.001909

.000010605

((

Mercury,

.01S013

.0001001

((

Brass,

.00189163

.000010509

((

Iron,

.00125344

,000006964

((

^V'ater,

.0466

not uniform.

((

Granite,

.00036350

.0000(MS25

Prof. Bartlett.

Marble,

.00102024

.00000566.3

((

Sends tone,

.00171576

.000009532

u

TABLE VIII, PROPERTIES OF MATEUIALS.

123

TABLE VIII.

PROPERTIES OF MATERIALS.

The authorities referred to by the capital letters in the table are :

B Barlow, On the Strength of Materials. Bevan.

Lieut. Brown. Couch. Franklin Institute, Report on

Steam Boilers. Gordon, Eng. Translation of

Weisbach. Hodgkinson, Reports to Brit. Association. Ha, Hassler, 2\ibles.

Be Br C. F.

G.

H.

L. Lame.

M. Musschenbroek, Int. to Nat Phil.

R. Rennie, Pliil. Trans.

Ro. Rondelet, Vxirt de Batir.

T. Telford.

Ta. Taylor, Statistics of Coal.

W. Weisbach, Mech. of Machin- ery and Engineering.

The numbers without letters ar« taken from Prof Moseley's En- gineering and Architecture

In finding the weights, a cubic foot of water has, for convenience, been taken at 62.5 lbs.

The numbers for compression taken from Hodgkinson were ob- tained by him from prisms high enough to allow the wedge of rupture to slide freely off. He shows that this is essential in experiments on rompression.

The modulus of rupture *S is the breaking weight of a prism 1 in broad, 1 in. deep, and 1 in. between the supports, the weight being ap- plied in the middle. To find the corresponding breaking weight I^of a rectangular beam of any other size, let / = its length, b =: its breadth,

2 b d'i and d = its depth, all in inches. Then W = -or X 'S.

The numbers in the last three columns express absolute strength For safety, a certain proportion only of these numbers is taken. The divisors for wood may be from 6 to 10, for metal from 3 to 6, for stone 10, and for ropes 3.

When double numbers are used in the column headed " Crushing Force per Square Inch in lbs.," the first applies to specimens moder- ately dry, the second to specimens turned and kept dry in a warm place two months longer. In the case of American Birch, Elm, and Teak, the numbers apply to seasoned specimens.

134

T.ABLE VIII.

'ROPERTIES OF MATERIALS.

Materials.

it

Metals.

Ccppe.', oapt, . . , rLllcd, . , r'iie-firawTi,

GoH,

Iron, cast, Canou Xo. 2, cold " •' hot

Devon No. ?, ccld ' hoi Butlery yo. 1, ci la" '' " hoi

Iron, wroughS, Encjlish bar, Welsh " Swedish " . .

Lancaster v'o , / Tenness'ie Missouri Iron wire, Enslish, a'an rhmipsb'g, ra.

blast,

((

u

kC

u

Lead, cast, . . Lead wir.3, .... Mercury, ....

Platina,

Silver,

Steel, s<.fi, ....

•' razor-teaporYMi, Tin, caet, .... Zinc, fused, . .

" roUed, . . .

S33

Ash, English, . .

Birch, English,

" Americf n, . Box,

Cedar, Canadian, .

Chestnut. . . .

Deal, Christiania mi(f i' », " Memel "

" Norwav Spruce, " English. ....

Elm. seasoned, . . .

Fir, New England, . .

" Riga, . . . Lignum-vitse, . . Mahogany, Spanish,

Specific Gravity.

8.399

8.6' )7

S.S64 F.

8.37S 19.2.3>Ha 19.361 Ua

7.066 H 7.046 H. 7.29.5 H. 7.2:id H. 7.079 H. 6.99S H.

7.700

7.473 F. 7.740 F. 7.S0.5 F. 7.722 F.

7.727 F.

II 446 M. P.:J17 ]l3.5i>S W. l.Ta'XilLv 1^2.669 Ua

l0 474H.i

7.7S0 7.840

7 050 TV. '.'.540 W

AV'eight

per

Cubic

Foot

in lbs

.760 B

.792 B.

.&iS B. .960 B

909 C

.6-57 Ro. .69S B. .590 B .340 .470 ,553 B .553 B.

.753 B.

1.220

.800

Tensile I Strength per Square ilnchinlbs.

524.94 537.94 554.00 554.87 1203.62 1210.06

441.62 440.37 455.94 451, SI 442.44 437.37

431.25

467.37 4S3.75 4S7.S1 432 62

482.94

715.37 707.31 S49.S7 '218.75 lli6.81 65L62 43G.25 490.')0 451 63 1^0 JO

47i 2.>

17963 R. 19072 32S26 F. 6122S

16653 II. 13505 H.

21907 H. 17466 H. 13434 n.

57120 L. 61960 T. 64960 T. 5S134F. 5S661 F. 52099 F. 47909 F.

80214 T. S41S6 F. 733-8 F. 89162 F.

1324 R.

2531 M.

40902 M. 120000 IrOOOO 5322 M.

47.53'

4'^.50;

4n.50' 60.00'

56.81'

41.06! 43.62 36.87 21.25 29.37 34.5G 34.-56

47.06

76.25

50.J0

2GC<JG ■»

1I40CB^.

1 3.300 Ro. 12400

17600 7000 13439 M.

12000 B. IISOOM. 16500

Crushing

Force per

Square

Inch

in lbs.

10637511. 103540 U.

14.54.3511. 93335 II. 86397 H.

56000 ?G.

fS633H.) \ 9363 H. ) f 3297 II. » J6102H.( 11 663 II. S771 H.

1033i B

Moduliis of Rup- ture S in lbs.

38556 H. 37503 H. 36288 H. 43497 H. 37503 H. 35316 H.

54000 G.

12156 B

10920 B. 9624 B

9364 B. 10386 B.

i S^7S B. ' e612B.

{Il^,jl «-"■

(8193 F. i 8193 H.

I

TABLE VIII. PROPERTIES OF MATERIALS.

125

Miiterials.

Specific Gravitj'.

Woods. Oak, English, . .

" Canadian,

Fine, pitch, .

red, . ...

American, white, " Southern

Poplar, ITeak, .

Other Materials.

Brick, red, . . " Dale red.

Chalk,

Coal, Penn. anthracite,

" " semi-bituminous, " Md. "

Penn. bituminous, Ohio "

" English " Earth,

loamy hard-stamped, fresh,

" " dry,

garden, fresh, . .

" dry, . .

dry, poor, . . .

Glass, plate, . . .

Gravel,

Gi-anite, Aberdeen, . Ivory,

Limestone, ....

Marble, white Italian, black Gal way, Masoni-y, quarry stone, dry, sandstone, "

" brick, dry, . |

Ropes, hemp, under 1 inch diam., '* from 1 to 3 in. " " over 3 inches "

Sand, river,

Sandstone, |

" Dundee, .... " Derby, red and friable,

Slate, Welsh,

" Scotch,

.931 B. .872 B. .6S0 B.

.657 B.

.455 Br. .372 Br.

.333 M.

.745 B.

2. 1 GSR. 2.0:^5 R. 2.7,S4 1.S69 1..327Ta 1.700 Ta 1.453 Ta. 1..552Ta. 1.312 Ta. 1.270 Ta. 1.2.59 Ta.

2.060 W. 1.930 W. 2.05 ) W. 1.630 W. 1.340 W. 2.453 1.920 2.625 R. 1.826 2.400 W. 2.S60 W. 2.63S H. 2.695 H. 2.400 W. 2.050 W. 1.470 W. 1.590 W.

1.8S6 1.900 W. 2.700 W. 2.530 R. 2.316 R. 2.S83

Weight

per

Cubic

Foot

iu lbs

58.3/

54.50 41.25

41.06

2S.44 54.50

23.94

46.56

135..50

130.31

174.00

116.81

82.94

106.25

90.81

97.00

82.00

79.3

73.69

!2>.Vo 12 ).62 128.12 101.87 83.75 153.31

1 20.no

164.06 114.12 1.50.00 173.75 164.87 168.44 150.00 128.12 91.87 99.37

Tensile

Strength

per Square

Inch in lbs.

117.87 118.75 168.75 1.58.12 144.75 180.50

10000 B. 10253 7318 M.

7200 Be. 15000 B.

280 300

9420 16626

Crushing Force per

Square Inch

in lbs.

(6184 II.)

1 1005-n)

14231 II. i ) 5982 II. j 6790 H. 1 6790 II. ) (5395H.) \7518U.J

(310711.

I 5124 II.

12101 II.

SOSR. 562 R.

501 R.

9230 W. 7213 W. 5156 W.

10914 R.

1500 W. 6000 W. 9583 G.

Modulus of Rup- ture S in lbs.

10032 B.

10596 B.

9792 B

8046 B.

7829 Br. 1.39S7Br.

14772 B.

340 W.

ISO w.

700 W. 1700 W 1062 2664

12800 9600

1400 W.

600 W.

13000 W.

800 W.

6630 R.

3142 R.

126 TABLE IX. MAGNETIC VARIATION.

TABLE IX. MAGNETIC VARIATION.

The following table has been made up from varioi^ sources, prin- cipally, however, from the results of the United States Coast Survey, kindly furnished in manuscript by the Superintendent, Prof A. D Bache. '• These results," he remarks in an accompanying note, " are from preliminary computations, and may be somewhat changed by the final ones." Among the other sources may be mentioned the Smith- sonian Contributions for 1852, Trans. Am. Phil. Soc. for 1846, Lond. Phil. Trans, for 1849, Silliman's Journal for 1838, 1840, 1846, and 1852, and the various American, British, and Russian Government Observations. The latitudes and longitudes here given are not always to be relied on as minutely correct. Many of them, for places in the Western States, were confessedly taken from maps and other uncer- tain sources. Those of the Coast Survey Stations, however, as well as those of American and foreign Government Observatories and Sta- tions, are presumed to be accurate.

It will be seen that the variation of the magnetic needle in the United States is in some places west and in others east. Tlie line of no variation begins in the northwest part of Lake Huron, and runs through the middle of Lake Erie, the southwest corner of Pennsylvania, the central parts of Virginia, and through North Carolina to the coast. All places on the east of this line have the variation of the needle west, all places on the west of this line have the variation of the needle east ; and. as a general rule, the farther a place lies from this line, the greater is the variation. The position of the line of no varia- tion given above is the position assigned to it by Professor Loomis for the year 1840. But this line has for many years been moving slowly westward, and this motion still continues. Hence places whose varia- tion is west are every year farther and farther from this line, so th&t the variation west is constantly increasing. On the contrary, places whose variation is east are every year nearer and nearer to this line, so that the variation east is constantly decreasing. The rate of this increase or decrease, as the case may be, is said to average ab:3Ut 2' for the Southern States, 4' for the Middle and Western States, and 6' for the New England States.* The increase in "Washington in 1840-2 was 3' 44.2"; in Toronto in 1841-2 it was 4' 46 2". The changes in

Prof Loomis in Silliman's Journal. Vol. XXXIX.. 1R40.

TABLK IX. MAGNETIC VARIATION.

127

Cambridge, 1708, 1742, 1757, 1761, 1763, 1780, 1782, 1783,

u {(

((

6 22

7 30

8 51

9 18

Cambridge, Mass. maybe seen from tbe following determinations of the variation, taken from the Memoirs of the American Academy for 1846.

9 0 Cambridge, 1788, 6 38

8 0 Boston, 1793, 6 30

7 20 Salem, 1805, 5 57

7 14 " 1808, 5 20

7 0- " 1810,

7 2 Cambridge, 1810,

6 46 " 1835,

6 52 '' 1840,

But besides this change in the variation, which may be called secu- lar, there is an annual and a diurnal change, and very frequently there are irrc^-ular chanires of considerable amount. With respect to the annual change, the variation west in the Northern hemi.>pbere is gen- erally found to be somewhat greater, and the variation east somewhat less, in the summer than in the winter months. The amount of this change is different in different places, but it is ordinarily too small to be of any practical importance. The diurnal change is well deter- mined. At Washington in 1840-2, the mean diurnal change in the variation was,*

Summer, 10 4.1

Autumn, 6 21.2 Winter, 5 9.1 Spring, 8 10.7

At Toronto the means were, t

t

1841.

6.67

9.46

12.38

1843.

1845.

1847.

1849.

1850.

1851.

Winter,

Spring and Autumn,

Summer,

5.64

9.36

11 70

5.73

9.15

13.36

7.28 10.08 13.84

8.25 12.25 14.80

8.01 10.90 13.74

7.01 10.82 12.61

The diurnal change in the variation is such that the north end of the needle in the Northern hemisphere attains its extreme westerly posi- tion about 2 o'clock, P. M., and its extreme easterly position about 8 o'clock, A. M. In places, therefore, whose variation is west, the maximum variation occurs about 2 P. M., while in places whose vari- ation is east, the maximum variation occurs about 8 A. M. In Wash- ington, according to the report of Lieutenant Gilliss, the maximum va- riation, taking the mean of two years' observations, occurs at l*^- 33'"" P. M., the minimum at s'^- 6"- A. M.

The determinations of the Coast Survey are distinguished by the letters C. S. attached to the name of the observer. In some instances the name of the nearest town has been added to the name of the Coast Survey station.

* Lieut. Gilliss's Report, Senate Document 172, 1845 '■ London Philosophical Transactions. 1852

1-^8

TABLE IX.

MAGxXETlC VARIATIUJN.

Place.

Maine. Agameuticus, Bethel,

Bowdoin Hill, Port- land, Cape Neddick,York Cape Small, Kennebunkport, Kittery Point, Mt. Pleasant, Portland, Richmond Island,

Neiv Hampshire.

Fabyan's Hotel, Hanover, Isle of Shoals, Patuccawa, Unkouoouuc,

Vermont. Burlington,

Ma.'i.'^ac/uisetts.

Annis-squani, Baker's Island,

Blue Hill, Milton,

Cambridge. Chapp.'iquidick.Ed-

gartown, Coddonsimi,Mar-

blehead,

Copecut Hill,

Dorchester, Fort Lee, .Salem, Ilyaunis. Indian Hill, Little Xahant, Nantasket, Nantucket, New Bedford, ShootHying Hill,

Barnstable, Tarpaulin Cove,

Rhode Island.

Beacon-pole Hill,

McSparran Hill, Point Judith,

Spencer Hill,

Connecticut.

Black Rock, Fair- field, Bridgeporc, Fort Wooster, Groton Point, New

London,

Lati- tude.

Longi- tude.

Authority.

Date

A '

o *

43 13.4

70 41.2

T. J. Lee, C. S.

Sept., 1817

44 2S.0

70 51.U

J. Locke,

•lune, 1S45

43 33.8

70 16.2

J. E. Ililgard. C S.

Aug., 1S51

43 11.6

70 36.1

J. E. Hilgard; C. S.

Aug., 1851

43 46.7

69 50.4

G. \V. Dean, C. S.

Oct., 1851

43 21.4

70 27.S

J. E. Ililgard, C. S.

Aug., 1851

43 4.S

70 43.3

J. E. Ililgard, G. S.

Sept., 1850

44 1.6

70 49.0

G. W. Dean, 0. S.

Aug.. 1 851

43 41.0

70 20.5

J. Locke,

June, 1 "45

43 32.4

70 14.0

J. E. Hilgard, C. S

Sept., 1S50

44 16.0

71 29.0

J. Locke,

June, 1>45

43 42.0

72 10.0

Prof Young,

1 S3 J

42 59.2

70 36.5

T. J. Lee. C. S.

Aug , 1847

43 7.2

71 11.5

G. W. Dean, C. S.

Aug., 1849

42 59.0

71 35.0

J. S. Ruth, C. S.

Oct , 1848

44 27.0

73 10.0

J. Locke,

June, 1845

42 .39.4

70 40.3

G. W. Keely, C. S.

Aug., 1849

42 32.2

70 46.8

G. W. Keely, C. S.

Sept., 1S49

42 12.7

71 6.5

T. J. Lee, 0. S. j

Sept. and ) Oct., 1845 J

42 22.9

71 7.2

W. C. Bond,

1352

41 22.7

70 23.7

T. J. Lee, C. S.

July, 1816

42 31.0

70 .50.9

G. W. Keely, C. S.

Sept, 1^49

41 43.3

71 3.3

T. J. Lee, C. S. {

Sept and I Oct , 1844 1

42 19.0

71 4.0

W. C. Bond,

1839

42 31.9

70 52.1

G. W. Keely, C. S.

Aug., 1849

41 3S.0

70 IS.O

T. J Lee, C. S.

Aug., 1S46

41 25.7

70 40.3

T. J. Lee, C. S.

Aug., 1S46

42 26.2

70 55.5

G. AV. Keelv, C. S.

Aug., 1-^49

42 18.2

70 54.0

T J. Lee, C. S.

Sept., 1847

41 17.0

70 6.0

T J. Lee, C. S.

July, 1346

41 33.0

70 54.0

T. J. Lee, C. S.

Oct., 1845

41 41.1

70 20.5

T. J. Lee. C. S.

Aug., 1 846

4i 23.1

70 45.1

T. J. Lee, C. S.

Aug., 1846

41 59.7

71 26.7

T. J Lee, C. S. {

Oct. and )

Nov., 1844}

41 29.7

71 27.1

T. J. Lee, C. S.

July, 1844

41 21.9

7) 28.9

R.H.Fauntleroy,C.S.

Sept , 1847

41 40.7

71 29.3

T. J. Lee, C. S {

July and ) Aug. 1844 j

41 S.6

73 12.6

J. Renwick, C. S.

Sept., 1845

4i 10.0

73 11.0

J. Renwick, C. S.

Sept., 1845

41 16.9

72 53.2

J. S. Ruth, C. S.

Aug., 1843

41 18.0

72 0.0

J. Renwick, C. S.

Aug., 1845

Variation.

o 10 11

II 11 12 11 10 14 11 12

iO.OW. 50.0 "

41.1 9.0 5.5 23.6 30.2 32.0 28.3 17.9

11 32.0 W.

9 15.0 " 10 .3.4 " 10 42.9 "

9 5.6 "

9 22.0 W.

11 36.7 W.

12 17.0 "

9 13.8 « 10 8.0 "

8 47.7 »

49.8 12.1

2.0

14.5

22.0

49.3

40.9 9 33.5 9 14.0 8 54.6 "

9 40.1 9 10.1

9 29.8 W.

8 53.3 "

8 59.4 "

9 11.9 »

6 53.5 W.

6 19.3 "

7 26.4 "

7 29.5 "

TABLE IX.

MAGNETIC VARIATION.

129

Place.

Lati-w^ tude.

Longi- tude.

Authority.

Date.

4

Variation

O (

O (

o

1

Milfovd,

41 IG.O

73 1.0

J. Renwick, C S.

Sept , 1S45

6

.3'-.3 W

New llaveu, Pavil-

ion,

41 18.5

72 55.4

J. S. Ruth, C. S

Aug., 1848

6

37.5 "

New Haven, Yale

College,

41 1S.5

72 55.4

J. Renwick, C. S.

Sept., 1845

6

17.3 "

Nojwalk,

41 71

73 24.2

J. Renwick, C. S.

Sept., 1S44

6

46.3 "

1 Oyster Point, New

i Haven,

41 17.0

72 55.4

J. S. Ruth, 0. S.

Aug., 1843

6

32.3 "

'■jachenrs Head,

Guilford,

41 17.0

72 43.0

J. Renwick, C. S.

Aug., 1S45

6

15.2 "

Sawpits,

40 59 5

73 o9.4

J. Renwick, C. S.

Sept., 1344

6

1.6 "

Say brook.

41 16.0

72 20.0

.1. Renwick, C. S.

Aug., 1845

6

49.9 "

Stamford,

41 3.5

73 32 0

J. Renwick, C. S.

Sept., 1844

8

40.4 "

Stouiugton,

41 20.0

71 54.0

J. Renwick. C. S.

Aug., 1845

7

3^.2 "

Netv York.

Albany,

42 39.0

73 44.0

Regents' Report,

1836

6

47.0 W.

lllooiuingdale Asy-

hnii,

40 43.8

73 57,4

J. Locke, C. S.

April, 1846

5

10 9 "

Cole, Staten Island,

10 31.8

74 13.^

J. Locke, 0. S.

April, IS46

5

33.8 "

! Drowned Meadow.

i L. I.,

40 .56.1

73 3.5

J. Renwick, C. S.

Sept., 1845

6

3.6 "

Flatbush, L. L,

40 40 2

73 57.7

J. Locke, C. S.

April, 1 846

5

54.6 "

Greenport, L. 1.,

41 6.0

72 21.0

J. Jlenwick, C. S.

Aug., IS45

7

14.6 "

Leggett,

40 4^9

73 53 0

R.H. Fauntleroy,C.S.

Oct., 1847

5

40.6 "

Lloyd's Harbor,

L. I.,

40 55.6

73 24. S

J. Renwick, C. S

Sept., 1844

6

12.5 "

New lloehelle,

40 52.5

73 47.0

J. Renwick, C. S.

Sept., 1844

5

31.5 "

New York,

40 42.7

74 0 !

J. Renwick; C. S.

Sept., 1845

6

25. n »

Oyster Bay, L. I.,

40 52.3

73 31 3

J. Renwick, C. S.

Sept., 1344

6

53 G "

L'ou.^e's Point, Sand.s Lighthouse,

45 0.(1

73 21.0

Boundary Survey,

Oct., 1845

11

2S.0 "

i

L. I.,

40 51.9

73 4.3.5

R.H. F:uintlcrov,C.S.

Oct., 1847

6

9.7 " 1

Sands Point, L. I.,

40 .52.0

73 43.0

J. Renwick, C. "S.

Sept., 1845

7

14.6 " i

\^'atchhill. Fire Isl-

li

and,

40 41.4

72 53 9

R.H. Fauntlcroy,C.S.

Oct., 1847

7

33 5 <^ ii

West Point.

41 25.(1

73 56 0

Prof. Davies,

Sept., 1835

6 32.0 "

Neiv Tcrstij.

Oape 5Iay Light-

' house.

38 55 8

74 57.6

J. Locke, C. S.

June, 1346

3

3.2 AY.

('Iiew,

39 43.2

75 9 7

J. Locke, 0. S.

July, 1316

3

20.4 "

Oiiurch Landing,

39 40 9

75 30.3

J. Locke, 0. S.

June, 1346

*5

45.8 «

Egg Island,

39 10.4

75 7.8

J. Locke, 0. S.

June, 1346

3

13.2 "

Hawkins,

.39 25.5

75 17.1

J. Locke, C. S.

June, 1346

2

.53.7 "

Mt.Piosc, Princeton,

40 22.2

74 42.9

J. E. Hilgard, C. S.

Aug., 1852

5

31.8 »

Newark,

40 44. '^

74 7.1)

■T. Locke, C. S-

April, 1346

5

32.7 "

Pine Mountain,

39 25.0

75 19 9

J. Locke, C. S.

June, 1346

2

52.0 »

Port Norris.

39 14.5

75 1.0

J. Locke. (". S.

June, 1346

.3

6.5 «

Sandy llDok,

40 28.0

73 59. S

J. Renwick, C. S

Aug., 1344

5

54 0 "

Town Bank, Cape

May,

39 .58.6

74 57.4

.7. Locke. C. S.

June, 1846

3

3 2 "

Tucker's Island,

39 30. S

74 16.9

T. J. Lee, 0. S.

Nov., 1846

4

23.8 "

White Hill, Bor-

■* '

dentown,

40 8.3

74 43 8

J. Locke, C S.

April, 1846

4 22.5 "

Pennsylvania.

Girard College,

Philadelphia,

39 58.4

75 9.9

J. Locke, C. S.

May, 1346

3

50.7 W.

Pittsburg,

40 26.0

79 .53.0

J. Locke,

May, ls45

0

33.1 "

Vauuxeni, Bristol, |40 5.9

74 52.7

J. Locke, C. S.

July, 1346

4

20.5 " 1

* Loeal ittrictinn exi.5t.=? here, according to Prof. Locke. 7

130

TABLE IX. MAGNETIC VAEIATION.

Place.

Lati- tude.

Longi- tude.

Authority. "^

Date.

Variation.

Delaivare.

Bombay Hook

o /

O 1

o

Lighthouse,

39 21.8

75 30.3

J. Locke, C. S

June, 1846

3 17.9 W

Fort^Delaware, Del-

aware River,

39 35.3

75 33.8

J. Locke, C. S.

June, 1846

3 16.0 "

Lewes Lauding,

3S 48.8

75 11.5

J. Locke, C. S.

July, 1846

2 47.7 "

Pilot Town,

.33 47.1

75 9.2

J. Locke, C. S.

July, 1346

2 42.2 »

Sawyer,

.39 42.0

75 .3.3.5

J. Locke, C. S.

June, 1346

2 47.8 "

Wilmingtv.n,

.39 44.9

75 33.6

J. Locke, C. S.

May, 1S46

2 31.8 «

Manjlnnd.

Annapolis,

33 56.0

76 35.0

T. J. Lee, C. S.

June, 1845

2 14.0 W.

Bodkiu,

39 8.0

76 25.2

T. J. Lee, C. S.

April, 1817

2 2.6 «

Finlay,

39 24.4

76 31.2

J. Locke, C. S.

AprU, 1846

2 19.5 "

Fort McIIenry,

Baltimore,

39 1.5.7

76 .34.5

T. J Lee, C. S.

April, 1347

2 13.0 »

Hill,

35 53.9

76 52.5

G. W. Deau, C. S.

Sept., 1850

2 1.5.4 "

Kent Island,

39 1.8

76 18.8

J. Ileustou. C. S.

July, 1349

2 30.5 "

Marriott's,

33 52.4

76 36.3

T J Lee, C. S. -

June, 1549

2 5.2 "

North Point,

•39 11.7

76 26.3

T J. Lee. C. S.

July, 1846

1 42.1 "

Osborne's Ruin,

39 27.9

76 16.6

T J. Lee, C. S.

June, 1845

2 32.4 «

Poole's Island,

39 17.1

76 15.5

T J. Lee, C. S.

June,- 1847

2 23.5 «

llosaune.

39 17.5

76 42.8

T. J. Lee. C. S.

June, 1815

2 12,0 "

Soper,

39 5.1

76 56.7

G. W. Deau, C. S.

July, 1350

2 7.0 "

South Base, Kent

Islaud,

33 53.S

76 21.7

T. J. Lee, C. S.

June, 1845

2 26.2 "

SusquehannaLight-

house, Havre de

Grace,

39 32.4

76 4.8

T J. Lee, C. S.

July, 1817

2 51.1 «

Tavlor,

33 59. S

76 27.6

T J. Lee, C. S.

May, 1347

2 18.4 "

Webb,

39 5.4

76 40.2

G W. Dean, C. S.

Nov., 1350

2 7.9 '

District of Colmn- bia.

Oausten, George-

town,

33 5.5.5

77 4.1

G. W. Dean, C. S.

June, 1351

2 11.3 W.

Washington,

33 53.7

77 2.8

J. M. Gilliss,

June, 1342

1 26.0 «

Virginia.

Charlottesville,

33 2.0

73 31.0

Prof. Patterson,

1835

0 0.0

Roslyn, Peters-

burg,

37 14.4

77 23.5

Q. "W. Dean, C. S.

Aug., 1852

0 26.4 w^

Wheeling,

40 8.0

80 47.0

J. Locke,

April, 1345

2 4.0 E.

North Carolina.

Bodie's Island,

35 47.5

75 31.6

C. 0. Boutelle, C. S.

Dec., 1846

1 1.3.4 W.

Shellbank,

3. .3.3

75 44.1

C. 0. Boutelle, C. S.

Mar., 1847

1 44.8 "

Stevenson's Point,

.36 6.3

76 11.0

C 0. Boutelle, G. S.

Feb., 1847

1 39.7 "

South Carolina.

Breach Inlet,

.32 46.3

79 48.7

C. 0. Boutelle. C. S.

April, 1849

2 16.5 E.

Charleston,

32 41.0

79 53.0

Capt. Bamett'

May, 1341

2 24.0 "

Ri.st Base, Edisto,

.32 33.3

80 10.0

G. Davidson, C. S.

April, 1350

2 53.6 "

Georgia.

Atliens,

.34 0.0

33 20.0

Prof. McCay,

18.37

4 31.0 E.

Cohuubus,

.32 2S.0

85 10.0

Geol. Survey,

1839

5 30.0 "

Milledgeville,

.33 7.0

83 20.0

Geol. Survey,

1833

5 51.0 "

Savannah,

1

32 5.0

31 5.2

J. E. IlJlgard, ?■. S.

April, 1852

3 4.5.0 "

TABLE IX. MA

GNETIC VARIAT

ION.

m\

r

Place.

Lati- tude.

Longi- tude.

Authority.

Date.

Variation.

Florida.

O 1

4 25.2 E.

5 20.5 " 5 29.2 « 5 29.0 »

Cape Florida, Cedar Keys, St. Marks Light, Saud Key,

o / 25 39.9 29 7.5 iO 4.5 21 27.2

SO 9.4 S3 2.8 84 12.5 81 52.0

J. E. Ililgard, C S. J. E. Hilgard, C. S. J. E. Hilgard, C. S. J. E. Hilgard, C. S.

Feb., 1850 Mar., 1852 April, 1852 Aug., 1849

Alabama.

Fort IMorgan, Mo- bile Bay, Tuscaloosa,

30 13.8 33 12.0

SS 0.4 87 42.0

R.H.Fauntleroy,C.S. Prof. Barnard,

May, ]3!7 1839

7 3.8 E. 7 28.0 "

Mississippi.

East Pascagoula,

30 20.7

88 31.4

R.II. Fauntleroy,C.S.

June, 1847

7 12.4 E.

Texas.

j

Dollar roint, Gal- veston, Mouth of Sabme,

29 2G.0 29 43.9

94 53.0 93 5L5

R.II. Fauntleroy,C.S. J. D. Graham,

April, 1848 Feb., 1840

8 57.2 E. 8 40.2 "

Ohio.

Carrolton.

Cincinnati,

Columbus,

Hudson,

Mai-ietta,

Oxford,

St. Mary's,

39 33.0 39 6.0

39 57.0 41 15.0 .39 26.0 .39 .30.0

40 32.0

84 9.0 84 22.0

83 3.0 81 26.0

81 29.0

84 33.0 si ly.c

J Locke, J. Locke, J. Locke, E. Loomis, J. Locke, J. Locke, J. Locke,

Sept., 1845 April, 1845 July, 1845 1S4M April, 184.5 Aug., 1845 Sept., 1345

4 45.4 E. 4 4.0 " 2 29.3 " 0 52.0 "

2 25.0 " 4 50.0 "

3 4.0 "

Tennessee.

\

Nashville,

36 10.0

86 49.(

Prof. Hamilton,

1835

7 7.0 B.

Michigan.

,

Detroit,

42 24.0

82 58.0

Geol. Report,

1840

2 0.0 E.

Indiana.

Richmond, South Hanover,

39 49.0 33 45.0

&4 47.0 85 23.0

J Locke, Prof. Dunn,

Sept., 1845 1837

4 52.0 E 4 35.0 "

1

Illinois.

Alton,

38 52.0

90 12.0

H. Loomis,

1840

7 45.0 E.

Missouri.

.

St. Louis,

33 36.0

89 36.0

Col. NicoUs,

1835

8 49.0 E.

Wisconsin.

^

Madison, Prairie du Chien,

43 5.0 43 1.0

89 41.0 91 8.0

U. S. Surveyors, U. S. Surveyors,

Nov., 1839 Oct., 1839

7 30.0 E. 9 5.0 "

loioa.

Brown's Settlement Davenport, Farmer's Creek,

42 2.f

41 30.C

42 13.C

91 J8.0

90 34.0

1 90 39. C

J. Locke,

U. S. Surveyors,

J. Locke,

Sept., 1839 Sept., 1839 Oct., 1839

9 4.0 E. 7 50.0 " 9 11.0 "

1

Wapsipinnicon River,

41 44.C

1 90 39.C

J. Locke,

Sept., 1839

8 25.0 «

Cnlifornia.

Point Conception,

34 26.C

I 120 26.f

) G. Davidson, C. S.

Sept., 1850

113 49.5 E.

b.

.

15!^

TABLE

IX. MAGNETIC VARIATION.

Place.

Lati- tude.

Longi- tude.

Authority.

Date.

Variation.

Point Pinos,

O 1

o /

o

/

Monterey,

36 33.0

121 54.0

G. Davidson, C. S.

Feb., 1351

14

53.0 E.

PresiLlio, San

Francisco,

37 47.8

122 27.0

G. Davidson. C. S.

Feb., IS52

15

26.9 "

San Diego,

32 42.0

117 14.0

G. Davidson, C. S.

May, 1351

12 29.0 «

Oregon.

Cape Disap-

pointment,

46 16.6

124 2.0

0. Davidson, G. S.

July, 1351

20

45.0 E.

Ewing Harbor,

42 44.4

124 21.0

G. Davidson, C S.

Nov., 1351

13

29.2 «'

Washington

Territory.

Scarboro' Har-

bor,

I

43 21.3

124 37.2

G. Davidson, C.S.

Aug., 1852

21

.30.2 E.

BRiTisa Amer-

ica.

Montreal,

45 30.0

73 35.0

Capt. Lefroy,

1342

8

.53.0 W.

Quebec,

46 49.0

71 16.0

Capt. Lefroy,

1342

14

12.0 "

St. Johns, C. E.

45 19.0

73 13.0

Capt. Lefroy,

1842

11

22.0 "

StansteaJ,

45 0.0

72 1.3. Q

Boundary Survey,

Nov., 1345

11

33.0 *'

Toronto,

43 39.6

79 21.5

British Govern.,

Sept., 1344

1

27.2 "

New Grenada

Panama,

8 57.2

79 29.4

\V H. Emory,

Mar., 1349

6

54.6 S.

Eastern Hemi-

sphere.

Green\vich,Eng-

land.

51 23.0

0 0.0

Prof. Airy,

1841

23

16.0 W.

Makei-stoun,

Scotland,

55 35.0

2 31.0 \Y.

J. A. Broun,

1342

25

2=!.0 «

Paris, France,

43 50.0

2 20.0 E. 1

Paris Observatory

Nov., 1851

20

25.0 «

Munich, Bara-

ria,

43 9.0

11 .37.0 "

1842

16

43.0 "

St. Peter.^burg,

1

1

Russia.

59 56.0

30 19.0 «

Russian Govern.,

1842

6 21.1 " II

Catherineuburg

Siberia.

■56 51.0

60 ai.O " ;

Russian Govern.,

1842

6

33.9 B

Xertchiusk, Si-

beria.

51 56.0

116 31.0 "

Russian Govern.,

1342

3

46.9 W.

St. Helena,

15 .56.7 S.

5 40.5 W.I

British Govern.,

Dec., 1845

23

36.6 "

Cape of Good

Hope,

33 56.0 '■'

18 23.7 E.

British Govern ,

.July, 1346

29

8.0 «

Hobarton, Van

1

Diemen-s Ld.,

42 .52.5

147 27.5 " :

British Govern.,

Dec., 1343

10

8.01.

TABLE X. TRIGONOMETRICAL FORMULA.

133

TABLE X.

TRIGONOMETRICAL AND MISCELLANEOUS FORMULA

Let a (fig. 57) be any acute angle, and let a perpendicular B Che irawn from any point in one side to the other side. Tlien, if the sidea

Fig. 57.

>f the right triangle thus formed are denoted by letters, as in the fig arc, we shall have these six formula :

1. sin, A =

2. COS. A = - .

3. tan. A =

4.

cosec.

-^-l

5.

sec.

■^-l

6.

cot.

a

Given- a. c

a, b

J., a

A,b

10

11 :.4. c

Solution ofRi'jht Triangles (fig. 57). Sought. A,B,l

A, B, c B,b,c

B, a, c B,a,b

Formulae.

a

sin.^=-, cos. C = -, b=-^ic-\-a){c a)

c c

tan. A = :^ , cot. B = -^ , c = ya* -f b*.

B =.90° A, b = a cot. A, c =^ B = 90o A. a = 6tan. -1. c =

sin. A b

COS. A ' B=--90° A. a = csin..4, i = c cos. .4

134

TABLE X. TRIGONOMETRICAL AND

Solution of Oblique Triangles (fig. 58).

Fig. 58

12 13 14

15

16 17

18

Given. A, B, a

A, a, b

a,b, C

a, 6, c

A,B,C,a A, b, c

a, b, c

Sought. I b

B

b =

sin. B

a sin. B sin. A '

b sin. A a

Formulae.

A Btan.^ {A B)

ja b) can, i (A + B)

•Ifs=i(a + 6 + c), sm. ^A=^l^^'l^. cos4^= J^\ tan.i^= J(f^i^>,

•^ y/ be ^ > 5(5 O)

. sin. A =

2 .^A* (5 a){s b) (s c)

be

a- sin. B sit C

area area area

area =

2 sin. A area = hbc sin. A.

s=i (a 4- 6 + r,, area=ys {s—a) {s—b) {«- «).

General Trigoriometri<v*' Fomnilce.

19! 20 21 22 23 24 25 26 27 28 29 •30 !3I

sin.'

J. + cos.'^ yl = 1.

.= 9

sin. (J. ± B) = .sin. ^1 cos. 75 ± sir h cos. J.. COS. {A da B) = COS. ^ COS. B rp sin. .^ "in. B. sin. 2 A = 2 sin. ^ cos. ^. COS. 2 J. = C0S.2 A sin,2 J^ == i _ o siii i

sin." A = h k ^os- 2 ^• COS.- ^ ^ i + ^ COS. 2 ^.

sin. J. + sin. B = 2 sin. ^ (^ + S) cos. ^ (^ ZJ). sin. .-1 sin. B = 2 cos. ^ (^ + 5) sin.^ [A B). COS. ^ + cos. B =-2 cos. |(A + JB) cos. ^ (J. fJ). cos. B cos. ^ = 2 sin. ^ [A -\- B) sin. ^ (^ P) sin .2 A sin.2jB= cos.= J5 -cos.^^ = sin. (^ + ^) sir i COS.- /I sin.'-' B = COS. (A + S) cos. (4 B).

COS.* ^ I-

MISCELLANEOUS FORMULJE.

195

, I Bin. A

132 tan. A = ^^;—^

COS. A sin. A

33

cot. A

tan 4 ±jan B

tan ^ ±jan /J 34 tan. (^ ± i) = 1 q: t^. J^tan. B

I sin (A ±B)

35|tan. A ± tan. B = ^^^ ^ cos. B '

36 cot. A ± cot. /i jsin ^ + sin B

38

sin. A sin. B sin A 4- sin- >S COS. A -\- COS. .B

sinj^±^) -^ sin j4 tin. B tan ^{A^- B) tan. i (4 B)

tan. H^ + ^)

sin A -\- sin J5 ^ \ i a n\

391 _,-* T = cot. ^ (A -U).

icos B COS. A - ^

sin. -4. sin. B ^ 1 / /i R\

40 rn u = tan. f ( A /j

;co.-^ .4 + cos B -^ ^

'sin. A sin. B

I cos B COS. A

sin A

42 tan. ^ A = 1 + cos. i

cot. ^(^ + 1^1-

43

cot. h A = ^

sin. .4 cos A

Miscellaneous Formidai.

Sought. 1

Given.

Formom.

Area of

44

Circle

Radius = r

71 r^.

45

Ellipse

Semi-axes == a and b

nab.

46

Parabola

Chord = c, height = h

%ch*

47

Regular Polygon Surface of

( Side = a, number of ) 1 sides = « )

180° \ or n cot. ^

48

Sphere

Radius = r

4 n r"'.

,'9

Zone

Radius = r, height =^ h

2 71 r h.

M^adiusof sphere=r )

S— (Ji - 2)180'-

50

Spherical Polygon Solidity of

) sum of angles = ^^ ( ( number of sides = n)

■;i/''X 180 D

.51

Prism or Cylinder

Base = b, height = k

bk.

52

Pyramid or Cone

Base = b, height = h

^bh.

53

Frustum of Pyr- ) amid or Cone )

( Bases = b and ftj , ) 1 height = h )

kh{b-{-b, + ybb,)

* The area of a circular segment on railroa^l curves, where the chord is very long m proportion to the height, may be found with great accuracy by the above formula

f36

TA.BLE X. JIISCELLANEOUS FOUMULiE.

54 55

Sough., Solidity of

Sphere

Given.

Radius

c; 1 le J i TJi^dii of bases = r )

'■ "I and /-, , height = fi )

-^ T5 1 ^ o 1 -1 f Semi-transverse axis " o6 Prohite Spiicroul ,. ,,.

' J or ellipse = a

I Semi conjugate ax

Formulae.

4 -i

3 T r\

58

Oblate Spheroid

Paraboloid

ixis

[ of ellipse

j Kadi us of base = ?•, I 1 heiixht ^ /i (

(

3 71 a^ b.

* ;r r^ h.

TT. = .3.U159 265.35 89793 23846 26433 83280. Log. 71 = 0.49714 98726 94133 85435 12682 88291

United States Standard Gallon = 231 cnb. in. = 0.133681 cub. ft

" " " Bushel = 21.50.42 "

British Imperial Gallon = 277.27384 "

According to Ilassler. French Metre, = 3.2817431 ft.,

Litre, = 61.0741569 cub. in.,

Kilogram, = 2.204737 lb. avoir..

Weight of Cubic Foot of Water,

Barora. 30 inches. Therm. Falir. 39.83°,

(C

= 1.244456 " = 0.160459 "

As usually given. = 3.280899 ft. = 61.02705 cub. in. = 2.204597 lb. avoir

= 62.379 lb. avoir. = 62.321 "

Length of Seconds Pendulum at Xcw York = 39.10120 inches. '' " " " " London = 39.13908 "

" Paris = 39.12843 "

Equatorial Radius of Earth according to Bessel = 20,923.597.017 feet Polar " •' « '■ = 20,853,654.177 ^

TABLE XI.

SQUARES, CUBES, SQUARE ROOTS, CUBE ROOTS,

AND

RECIPROCALS OF NUMBERS

T&OM 1 TO 1054.

138 TABLE XI. SqUAKES, CUBES, SQUARE ROOTS,

No.

Squares.

Cubes.

Square Roots.

Cube Roots.

Reciprocals.

1

1

1

1.0000000

1.0000000

1.000000000

2

4

8

1.41421.36

1.2599210

.500000000

3

9

27

1.73205:J8

1.44224<.6

.3333.333.33

4

16

64

2.0000000

1.. 53740 11

.250000000

5

25

125

2.2360680

1.7099759

.200000000

6

36

216

2.4494897

1.3171206

.166666667

7

49

343

2.6457513

1.9129312

.142857148

8

64

512

2.82S4271

2.0000000

.12.5000000

9

81

729

3.0000000

2.0800337

.111111111

10

100

1000

3 1622777

2.1544347

.100000000

11

121

1331

3.3166243

2.2239801

.090909091

12

144

1723

3.4641016

2.2894286

.033.333333

13

169

2197

3.605.5513

2.3513347

.076923077

14

196

2744

3.7416574

2.4101422

.071428571

15

225

3375

3.8729833

2.4662121

.066666667

16

256

4096

4.0000003

2.5198421

.062500000

17

239

4913

4.1231056

2..57128I6

.053823529

13

324

5332

4.2426107

2.6207414

.0555.55556

19

361

6859

4.3588989

2.6634016

.052631579

20

400

8000

4.4721360

2.7144177

.050000000

21

441

9261

4.5325757

2.7589243

.047619048

22

434

10643

4.6904153

2.3020393

.045454545

23

529

1216/-

4.7953315

2.8433670

.04347326

24

576

13324

4.3939795

2.8344091

.041666667

25

625

15625

5.0000000

2.9240177

.010000000

26

676

17576

5.0990195

2.9624960

.033461533

27

729

19633

5.1961524

3.0000000

.037037037

23

784

21952

5.2915026

3.0365339

.035714236

29

841

5^4339

5.3851643

3.0723163

.034482759

30

900

27000

5.4772256

3.1072.325

.033333333

31

961

29791

5.5677644

3.1413806

.0.32253065

32

1024

32763

5.6563542

3.1743021

.031250000

33

1039

35937

5.7445626

3.2075313

.030303030

34

1156

39304

5.S309519

3.2396113

.029411765

35

1225

42875

5.9160793

3.2710663

.028571429

36

1296

46656

6.0000000

3.3019272

.027777778

37

1369

506.53

6.0527625

3.-33222 13

.027027027

33

1444

54372

6.1644140

3.3619754

.026315739

39

1521

59319

6.2449930

3.3912114

.025641026

40

1600

64000

6.3245553

3.4199519

.025000000

41

1631

63921

6.4031242

3.4432172

.024390244

42

1764

74033

6.4307407

3.4760266

.023809524

43

1349

79507

6.5574335

3.503.3931

.0232.55314

44

1936

85134

6.6332496

3.5303483

.022727273

45

2025

91125

6.7032039

3.5568933

.022222222

46

2116

97336

6.7323300

3.583)479

.021739130

47

2209

103823

6.3556.546

3.6038261

.021276600

43

2304

110592

6.9232032

3.6:342411

.020333333

49

^01

117649

7.0000000

3.6593057

.020403163

50

2500

125000

7.0710673

3.6340314

.020000000

51

2601

132651

7.141-4234

3.7084298

.019607843

52

2704

140603

7.2 LI 1026

3.7.325111

.019230769

53

2309

143377

7.2801099

3.7562858

.018367925

51

2916

157464

7.3484692

3.7797631

.013518519

55

3J25

166375

7.4)61935

3.3029525

.013131818

56

3136

175616

7.4833143

3.3258624

.017357143

57

3249

185193

7.5493344

3.8485011

.017543360

53

3364

195112

7.0157731

3.8703766

.017241379

59

3481

205379

7.6311457

3.8929965

.016949153

60

3600

216000

7.7459667

3.9143676

,016666667

61

3721

226931

7.8102497

3.9364972

.016393443

62

3344

233323

7.3740079

3.9573915

.016129032

CUBE ROOTS, AND HECirilOCALS.

139

lU

63

64 65 66 67 6S 6^

70 71 72 73

74 7o 76

77 73 79

30 81 82 83 84 85 86 87 88 89

90 91 92

93 94 95 96 97 98 99

100

lUl

102

103

104

105

106~

107

103

109

110

111

112

113

114

115

116

117

118

119

120 121 122 123 124

3969 4016 4225 4356 4439 4624 4761

4900 504 1 5184 5329 5476 5025 57 76 5929 6034 6241

6400 6561 6724 6339 7056 7225 7396 7569 7744 7921

8100 8231 8464 8619 8336 9025 9216 9409 96:)4

10000 10201 10404 10609 10316 11025 11236 11449 11664 1 1331

12100

12321

12544

12769

12996

13225

13456

13639

13924

14161

14400 14611 14334 15129 15376

250047 262144 274625 2o7496 300763 314432 323509

343000 357911 373248 339017 405224 421375 433976 456533 474552 493039

512000 531441 551368 57 1 737 592704 614125 636056 653503 631472 704969

729000

i OOOi I

773633 804357 830534 857375 834736 912673 911192 970299

1000000 1030301 1061203 1092727 H24.S64 1157625 1191016 1225043 1259712 1295029

1331000

1367631

1404928

1442897

1431 544

1520375

1560896

1601613

1613032

1635159

1723000 1771561 1815848 1860367 1906624

7.9372539 8.0000000 8.0622577 8.1240334 8.1853528 8.2462113 8.3066239

8.3666003

8.4261498 8.4352314 3.54 10U37 8.6023253 8.6602S40 8.7177979 8.7749644 8.831 7 609 8.8831944

8.9442719 9.0000000 9.05.53351 9.1104336 9.1651514 9.2195445 9.2733185 9.3273791 9.3303315 9.4339311

9.4363330 9.5393920 9..59 10630 9.6436508 9.6953597 9.7467943 9.7979590 9.8483578 9.8994949 9.949o744

lo.onooooo

10.0493756 10.0995049 10.1433916 10.1930390 10.2469508 10.2956301 i0.34i'h04 10.3923048 10.4403065

10.4330035 10.5356538 10.5330052 10.6301458 10.67707S3 10.7233053 1 0.7703296 10.8166538 10.8627805 10.9087121

10.9544512 11.0000000 11.0453610 11.0905365 11.1355237

3.9790571

4.0000000

4.02()72.'6

4.0112401

4.0615130

4.0816551

4.1015661

4.121 23.'i3 4.14U3173 4,1601676 4.1793390 4.1933364 4.2171633 4.2358236 4.2543210 4.2726536 4.2903404

4.3083695 4.32674b7 4.3444815 4.3620707 4.3795191 4.3963296 4.4140049 4.4310476 4.4479602 4.4647451

4.4814047 4.4979414 4.5143574 4.5306549 4.54633.59 4.5629026 4.5738570 4.5947009 4.6104363 4.6260650

4.6415888 4.6570095 4.6723287 4.6375482 4.70^6694 4.7176940 4.7326235 4.7474594 4.7622032 4.7763562

4.7914199

4.895t955 4.3202345 4.8345331 4.848^076 4.8629442 4.8769990 4.8909732 4.9043631 4.9186347

4.9324242 4.9460374 4.9596757 4.9731898 4.9366310

.015873016 .015625000 ,015384615 .015151515 .014925373 .014705332 .0144927.54

0142N5714 .0140^4507 .(0 38^3889 .01369.'-630 .013513514 .013333333 .013157895 .012987013 .012820513 .012653223

.012500000 .012345679 .012195122 .012048193 .011904762 .011764706 .011627907 .011494253 .011363636 .011235955

.011111111

.010939011 .010^69565 .010752638 .01063.>298 .010526316 .010416667 .010309278 .0102(14032 .010101010

.010000000 .009900990 .009i03922 .00970i-738 .001,61.53'?5 .009523810 .009433962 .009345794 .009259259 .009174312

.O090909'i9 .009009009 .00>:923571 .003349.5.58 .Olte771930 .003695652 .003620690 .003547009 .003474576 .008403361

.008333333 .003261463 .008196721 .008130081 .008061516

14U

TABLE XI. SQUARES, CCBES,

SQUARE ROOTS,

No.

Squares.

Cubes

Square Roots.

Cube Roots.

Reciprocals.

125

1.5625

1953125

11.1303399

5.0000000

.O030JO000

126

15S76

2tr))376

11.2249722

5 0132979

.007936503

127

16129

2)43333

11.2694277

5 0265257

.007874016

12S

163S4

2)97152

11.3137035

5.0396342

.007812;500

12J

16611

21463^9

11.3573167

5.0527743

.0077519.33

133

16900

21 970 JO

11.4017543

5.0657970

.007692303

131

17161

2243091

11.4155231

5.0737.531

0)7633533

132

17424

2299963

11.4391253

5.0916134

.01)757.5753

133

176S9

2352637

11. .532.5626

5.10446^7

.007513797

i;i4

179.56

2106104

11.5753369

5 1172299

.0)7462637 ;

13.5

18225

2460375

11.6139.500

5 1299273

.037407407

136

13496

251.54.56

11.6619033

5 1425632

.0073.52941

137

13769

2.571353

11.7046999

5.1-551367

.0[)7299270

13S

19044

2623072

11.7473444

5 167^193

.007246377

139

19321

263.5619

11.7393261

5.1301015

.007194245

140

19600

2744010

11.3.321596

5.1924941

.007142357 i

141

19331

23f)322[

1 1.3743121

5.2043279

.007092199 1

142

20161

2363233

11.916.3753

5 2171034

.0070422^54 ;

143

20449

2921207

11.9532607

5.2293215

.006993007

144

20736

2935934

12.0'JOOOOO

5.2414S23

.006944444

14o

21 025

.3013625

12.041.5946

5.2.535379

.006>96552

146

21316

3II2136'

12.0330460

5.2656374

.0OG349315

147

21609

3176523

12.1243557

5.2776.321

.00630272 i

U3

21904

32 U 792

12.16-55251

5.2395725

.00075675? '

149

22201

3307949

12.2065558

5..3014592

.00671 1409 1

150

22500

3375000

12 2474437

5.31.32923

.006666667

151

22301

3142951

12 23320.57

5.3250740

.0)6622517

1 152

23101

.3511303

12.3233230

5 3363033

.006573947 |

153

23109

3531577

12 3693169

5.3434312

.006535943

154

23716

36.52264

12.4096736

5..3601034

.006493506

155

24025

3723375

12.4493996

5.37163.54

.006451613

156

21.3.36

3796416

12.4509960

5.3332126

.006410256

157

21619

3369393

12..5293641

5.3946207

.006369427

15S

24961

3944312

12..5693051

5.4051202

.006329114

159

252S1

4019679

12.6095202

5.4175015

.006239303

160

25600

4096000

12.6491106

5.4233-3^52

.006250000

161

2.5921

4173231

12.6335775

.5.4401218

.006211130

162

26244

4251528

12.7279221

5.4513618

.006172-40

163

26.569

4330747

12.7671453

5.46255.56

.006134969

164

26596

•4410944

12.3062435

5.4737037

.006097561

165

27225

4492125

12.3452326

5.4343066

.006)60606

166

27556

4574296

12.3310937

5.49-53647

.006024096

167

27339

4657463

12.9223430

5.5063784

.01.5933024 i;

163

23221

4741632

12.9614314

5.5173434

.00-59.52331 j

169

23561

4326309

13.0000000

5..5237748

.035917160

170

23900

4913000

13.0334043

.5.5396533

.005332.353

171

29241

5000211

I.3.0r66963

5.5.504991

.00.53479-53

172

29534

5033443

13.1143770

5.5612973

.00.53139.53

173

29929

5177717

13.1529464

5.5720.546

.005730347

174

30276

5263024

13.1909060

5.5327702

.00.5747126

175

30625

5359375

13.2237566

5..5934447

.005714236

176

30976

5451776

13.2661992

5.6040737

.00.5631318

177

31329

.5545233

13.3011347

5.6146724

.005649713

178

316S4

5639752

13.3416641

5.6252263

.00.561797.^

179

32)41

573.5339

13.3790332

5.6357403

.005536592

130

32400

.5332000

13 4164079

5.6462162

.005555-556

181

32761

5929741

13.4536240

5.6566.523

.005524362

132

33124

6023563

13.4907376

5.6G705!]

005494505

133

.33439

6123437

13.5277493

5.6774114

.005161431

134

.333.56

6229.504

13.5646600

5.6377:340

.005434733

13.5

34225

6331625

13.6014705

5.6930192

.ftO54O.540E

186

34596

d434356

1.3.6331317

5.7032675

.005376344

CUBE KOOTS, AND RECII EOCALS.

141

T-

No.

1S7

158 ISO

190 191 192 193 194 195 196 197 198 199

210 211 212 213 214 215 216 217 213 219

220 221

222 22-3 224 225

226 227 223 229

240 241 242 243 244 245 246 247 243

Squares.

■'A'. 69 :i5:{l4 35721

36100 ;-i(.4-i 36364 37249 37636 38025 38416 38S09 39204 39601

200

40000

201

40401

202

40304

203

41209

204

41616

205

42025

206

42436

207

42349

203

43264

209

43631

Cubes.

Square Roots.

41100 44521 44944 45369 45796 46225 46656 47039 47524 47961

48400 43841 49284 49729 50176 50625 51076 51529 5 1934 52441

230

52900

231

53361

232

53824

233

54289

234

54756

235

55225

236

55696

237

56169

238

56644

2.39

57121

57600 58081 5S5M 59049 59536 60025 60516 61009 61504

6539203 6644672 6751269

6859000 6967871 7077838 7139057 7301384 7414875 7529536 7645373 7762392 7330599

8000000 8120601 8242408 836542? 8489664 8615125 8741816 8369743 8993912 9129329

9261000

9393931

9523128

9663597

9S00;344

9933375

10077696

1021S313

10360232

10503459

10648000 10793361 10941048 11039567 11239424 11390625 11543176 11897083 11852352 12008989

12167000 1232S391 1 2437 1 68 12649337 12812904 12977875 13144256 13312053 13431272 13651919

13324000 13997521 14172438 14343907 14526784 14706125 14336936 15069223 15252992

Cube Roots.

13 6747943 13.7113092 13.7477271

1.3.7840138 13.8202750 13.8564065 13.8924440 13.9233383 13.9642400 14.0000000 14.03.56688 14.0712473 14.1067360

14.1421356 14.1774469 14.2126704 14.2473068 14.2828569 14.3173211 14.3527001 14.3374946 14.4222051 14.4568323

14.4913767 14..5258390 14.5602198 14.5945195 14.6237388 14.6623733 14.6969385 14.7309199 14.7643231 14.7986488

14.8323970 ]4.866(i637 14.8996644 14.9331345 14.9666295 15.0000000 15.0332964 15.0665192 15.0996639 15.1327460

15.1657509 15.1936342 15.2315462 15.2643375 15.2970535 15.3297097 15,3622915 15,3943043 15,4272486 15.4596248

15.49193.34 15.5241747 1.5.5563492 15..58S4573 15.6204994 15.6524758 15.6343371 15,7162336 15.7480157

Reciprocalfi.

5.71S4791 5.7236543 5.7387936

5,7438971 5,7539652 5.7639932 5.7739966 5.7889604 5.7983900 5 8037857 5.8136479 5.8284767 5.3382725

5.8480355 5.8577660 5.3674643 5.8771307 5,83676.53 5.8963685

5 9059406 5.91.54817 5.9249921 5.9344721

5.9439220 5.953.3418

5.9627320 5.9720926 5.9314240 5.9907264 6.0000000 6.00924.50 6.0184617 6.0276502

6.0368107 6,0459435

6 0550489 6.0641270 6.0731779 6.0822020 6.0911994 6.1001702 6.1091147 6.1180332

6.12692.57 6.1357924 6.1446337 6.1534495 6.1622401 6.1710058 6.1797466 6,1884628 6.1971544 6.20.58218

6,2144050 6.2230843 6.2316797 6,2402515 6.2487998 6.2573248 6,2653266 6,2743054 6,2327613

.005347591 .00.5319149 005291 U05

.005263153 .005235602 .005208333 .005181347 .0051.54639 .005128205 .005102041 .005076142 .005050505 005025126

.005000000 .004975124 ,004950495 .004926108 ,004901961 .004378049 .004354369 .004830918 .004807692 .004784639

,004761905 ,0047393:-6 .0047169S1 .004694336 ,004672397 .004651163 ,004629630 .004603295 ,004587156 .004566210

,004545455 .004524387 ,004504505 ,004434305 .004464236 ,004444444 ,004424779

35S

;5£ .004366812

.001347826 .004329004 .004310345 .004291845 .004273504 .0042,55319 ,0CI42372S3 ,004219409 .004201681 .004184100

.004166667 .004149378 ,004132231 .004115226 .004098361 .0040816.33 004065041 .004043583 .004032258

142

TABLE XI. SQUARES, CUBES,

SQUARE R«'ul&,

! -1

No.

Squares.

Cubes.

Square Roots

Cube Roots.

Reciprocals.

249

62001

154.38249

15.7797333

6.2911946

.004016064

250

62500

15625000

15.8113383

6.2996053

.004000000

251

53001

15813251

15.3429795

6.3079935

.00.3934064

252

63504

16103003

15.3745079

6.3163.596

.0039632.54

253

64009

16194277

15.9059737

6.3247035

.0039-52569

251

64516

16387064

15.9373775

6.3330256

.003937003

255

65025

16581375

15.9637194

6.34132.57

.003921569

256

65536

16777216

16.0000000

6.3196042

.00-3906250

257

66049

16974593

16.0312195

6.3573611

.003391051

25S

66564

17173512

16.0623734

6.3663963

.00387.5969

259

670S1

17.37.3979

16.0934769

6.. 37431 11

.003361004

260

67600

17576000

16.12451.55

6.3325043

.00.3346154'

261

68121

17779581

16.1.5.54944

6.-39)6765

.00.3831418

26-2

68644

17931723

16.1864141

6.. 3938279

.03.3316:5:94

263.

69169

18191447

16.2172747

6.4069535

.003302231

264

69696

18.399744

16.2430763

6.41.50637

.003787879

265

70225

18609625

16.2783206

6.4231533

.003773585

266

70756

18321096

16.309.5064

6.4312276

.003759398

267

71289

19034163

16.3401346

6.4392767

.00374.5318

203

71824

19243332

16.3707055

6.4473057

.003731.343

269

72361

19165109

16.4012195

6.4553143

.003717472

270

72900

1938.3000

16.4316767

6.4633041

.003703704

271

73441

19902511

16.4620776

6.4712736

.003690037

272

73984

20123643

16.4924225

6.4792236

.003676471

273

74529

20346417

16.5227116

6.4371541

.003663004

274

75076

20570324

16.0.529454

6.49506.53

.003649635

275

75625

20796375

16.5831240

6.. 5029572

.003636364

276

76176

21024576

16.6132477

6.5103300

.003623133

277

76729

212539.33

16.6433170

6.5186339

.00.3610108

278

77284

21434952

16.6733.320

6..5265139

.003597122

279

77841

21717639

16.7032931

6.. 5343351

.003534229

230

78400

219.52000

16.7332005

6.5421326

.00.3571429

2S1

73961

22188041

16.7630.546

6. .54991 16

.003553719

282

79524

22425768

16.7923.5.56

6.5576722

.003.546099

283

80039

22665] 37

16.3226033

6.. 56.54 144

.003.5.3.3569

284

80656

229(16304

16.3-522995

6.5731335

.00.3521127

285

81225

23149125

16.8819430

6.5303443

.003503772

286

81796

23393656

16.9115.345

6.5385323

.003496503

287

82369

23639903

16.9410743

6.5962023

.003434321

288

82944

23887372

16.970.5627

6.6033545

.003472222

289

83521

241.37569

17.0000300

6.6114890

.0034613203

290

84100

24339000

17.0293=64

6.6I910S0

.00.3443276

291

84631

24642171

17.0.537221

6.62670.54

.00:}4-36426

292

85264

243970 S8

17.0380075

6.6342874

.003424653

293

85849

251537.57

17.1172123

6.6113.522

.033412969

294

86436

25112184

17.1464232

6.6193993

.003401-361

295

87025

25672375

17. 175.56 to

6.6569302

.003339831

296

87616

25931336

17.2046.505

6.6644437

.003378378

297

38209

26193073

17.2.33G879

6 6719403

.003367003

298

88304

26163.592

17.2626765

6.6794200

.003355705

299

89101

26730399

17.2916165

6.6863831

.003344432

300

90000

27000000

17.320.5081

6.694-3295

.00.3333333

301

90601

27270901

17.349.3516

6.7017593

.003322259

302

91204

27543603

17.3781472

6.7091729

.0033112.58

303

91309

2781S127

17.4Q68952

6.7165700

.003300330

304

92416

23094464

17.435.59.53

6.7239503

.003289474

305

93025

23372625

17.4642492

6.73131.55

.00.3278639

306

93636

236.52616

17.4928557

6.7336641

.003267974

307

94249

23934443

17.5214155

6.7459967

.00.3257329

308

94864

29213112

17.&499283

6.7.533134

.003246753

309

9.5481

29503629

17.. 578.39.53

6.7606143

.003236246

310

96100

29791000

17.6063169

6.7673995

.00322.5806

CUBE ROOTS, AND KECIPROCALS.

143

No.

311 312 313 314 315 316 317 318 319

320 321 322 323 324 32.5 326 327 325 329

330 331 332 333 334 335 336 337 33S 339

340 341 342 343 344 345 346 347 343 349

350 351 3.52 353 351 355 3.56 357 358 359

360 361 362 363 364 365 366 367 368 369

370 371 372

IL.

Squares.

96721

97344

97969

9S596

99225

99S56

100489

101124

1U1761

102100 103041 10.36S1 104329 104976 10.5625 ] 06276 1(16929 1075S4 103241

108900 109561 110224 11 0339 111556 112225 112S96 113.569 1 14244 114921

115600 116231 116964 117619 113336 119025 119716 120409 121104 121301

122500 12-3201 12.3904 124609 125316 126025 126736 127449 128164 128881

129600 130.321 131044 131769 132496 133225 1339.56 134639 13.5424 136161

136900 137641 133384

Cubes.

Square Koots.

Cube Roots.

30080231 30371328 30664297 309.59144 31255875 31554496 31855013 321574.32 32461759

32763000 33076161 3;53S6243 33698267 34012224 34323125 34615976 34965783 352-57552 3-561 1239

35937000 38264691 36594363 36926037 37259704 37595375 37933056 38272753 336H472 33953219

39.304000 39651821 40001688 40353807 40707584 4106.3625 41421736 41781923 42144192 42508549

42375000 4.3213551 43614208 439S6U77 44361364 44733375 45118016 45499293 458S2712 46263279

466.56000 47045831 47437923 47832147 48228544 48627125 49027396 49430S63 49836032 50243409

5065.3000 51064811 51478S48

17.6351921 17.6635217 17.6918060 17.7200451 17.7432393 17.7763388 17.8044933 17.8325,545 17.fc605711

17.888.54.38 17.9164729 17.9443.534 17.9722008 18.0000000 18.0277564 18.0554701 18.0.-31413 18.1107703 18.138.3571

18.1659021 18.1934054

13.2203672 1S.24S2876 18.2756669 18.3030052 18.3303023 18.3575598 18.3347763 18.4119526

18.4390889 18.46618.53 18.4932420 18.5202592 18.5472370 13.5741756 18.80107.52 18.6279360 18.6.547581 18.6315417

18.7082S69 18.7.349940 18.7616630 18.7882942 13.8143877 18.8414437 18.8679623 18.8944436 18.9203879 18.9472953

18.9736660 19.0000000 19.0262976 19.0.52.5589 19.0787840 19.1049732 19.1311265 19.1.572441 19.1833261 19.2093727

19.2353841 19.2613603 19.2873015

Reciprocals.

6.7751690 6.7324229 6.7396613 6.7963344 6.8040921 6.8112347 6.8184620 6.8256242 6.8327714

6.8399037 6.8470213 6.8.541240 6.8612120 6.8632355 6.8753443 6.8323888 6.8894188 6.8964.345 6.9034359

6.91042.32 6.917.3964 6.9243556 6.9313008 6.9.332321 6.9451496 6.9520533 6.9589434 6.9658198 6.9726S26

6.9795321 6.9S63631 6.99319(16 7.0000000 7.0067962 7.013.5791 7.0203490 7.02710.58 7.03.33497 7.0405806

7.0472987 7.0.540041 7.0606967 7.0673767 7.0740440 7.0806988 7.0873411 7.0939709 7.1005SS5 7.10719.37

7.1137866 7.1203674 7.1269360 7.1334925 7.1400370 7.146.5695 7.1530901 7.1.595938 7.1660957 7.1725809

7.1790544 7. 1855 162 7.1919663

.003215434 .003205128 .003194388 .003134713 .003174603 .003164557 .003154574 .003144654 .003134796

.003125000 .003115265 .00310.5590 .003095975 .003036420 .003076923 .003067435 .0030.58104 .003048780 .003039514

.003030303 .003021148 .003012048 .003003003 .002994012 .002935075 .002976190 .002967359 .0029585^(1 .002949353

.002941176 .002932551 .002923977 .002915452 .002906977 .002898551 .002890173 .002381844 .002873563 .002865330

.002357143 .002849003 .002840909 .002832861 .002824859 .002816901 .002808989 .002301120 .002793296 .002785515

.002777773 .002770083 .002762431 .002754321 .002747253 .002739726 .002732240 .002724796 .002717391 ,002710027

.0027Lr2703 .002695418 .002688172

I

11

TABLE XI. SQUARES, CUBES,

SQUARE ROOTS,

No.

Squares.

Cubes.

Square Roots.

Cube Roots.

Reciprocal*.

373

139129

51395117

19.3132079

7.19340.50

.002630965

371

139376

52313624

19.. 3390796

7.204332 a

.002673797

375

140325

52734375

i9..3649167

7.2112479

.002666667

376

141376

53157376

19.3907194

7.2176522

.0026.59574

377

142129

53532633

19.4164373

7.2240450

.0026.52.520

373

142334

54010152

19.4422221

7.2304263

.002645503

379

143641

54439939

19.4679223

7.2367972

.002633522

330

144400

54372000

19.4935337

7.2431565

.002631579

331

145161

55306:M1

19.5192213

7.2495045

.002621672

332

145924

55742963

19.5443203

7.2.553415

.002617301 1

333

146639

56131337

19.5703353

7.2621675

.002610966

334

147456

56623104

19..5959179

7.2GS4-24

.0026 m 67 I

335

143225

57066625

19.6214169

7.2747^64

.002597403

336

143993

57512456

19.6463327

7.2310794

.002590674

337

149769

57960603

19.67231.56

7.2373617

.00253:3979

333

150544

53411072

19.69771-56

7.29.36330

.002577320

339

151321

53363369

19.72.30329

7.2993936

.002570694

390

152100

59319000

19.7434177

7.30314.36

.002564103

391

152331

59776471

19.7737199

7.3123^23

.002557545

392

153664

60236233

19.7939399

7.3136114

.002.551020

393

154449

60693457

19.3242276

7.-3243295

.002.544529

394

155236

61162934

19.^494332

7.3310369

.002533071

395

156025

61629375

19.8746069

7.3372339

.002531646

396

156316

62099136

19.3997437

7.34.34205

.00252.52.53

397

157609

62570773

19.9243533

7.3495966

.002518392

393

153404

63044792

19.9499373

7.3557624

.002512563

399

159201

63521199

19.9749344

7.3619178

.002506266

400

160000

64090000

20.0000000

7.-3630630

.002.500000

401

160301

64431201

20.0249344

7.3741979

.002493766

402

161604

61964303

20.0499377

7.-3303227

.002437562

403

162409

6.5450327

20.0743599

7.3364373

.002431390

404

163216

65939264

20.0997512

7.3925418

.00247.5243

405

164025

66431125

20.1246113

7.-3936363

.002469136

406

161S36

66923416

20.1494417

7.4047206

.00246:30.54

407

165649

6741*143

20.1742410

7.4107950

.002457002

403

166464

67917312

20.1990099

7.4163595

.0024.50980

409

167231

63417929

20.2237434

7.4229142

.002444938

410

163100

63921000

20.2434.567

7.4239.539

.002439024

411

163921

69426531

20.2731349

7.4:349933

.00243-3090

412

169744

699:34523

20.2977631

7.4410139

.002427184

413

170569

70444997

20.3224014

7.4470-342

.002421.303

414

171396

70957944

20.3469399

7.4530.399

.00241:5459

415

172225

71473375

20.371.5433

7.4590-3.39

.002409639

1 ■■■*■-'

. 416

173056

71991296

20. .3960781

7.4650223

.002403346

417

173339

72511713

20.4205779

7.4709991

.002393032

413

174724

73031632

20.4450433

7.4769664

.002392.344

419

175561

73560059

20.4694395

7.4529242

.002356635

420

176400

74033003

20.4939015

7.4833724

.002330952

421

177241

74613461

20.5132345

7.4943113

.002375297

422

17S034

75151443

20..5426336

7.5007406

.002369663

423

173929

75636967

20.5669633

7.5066607

.002364066

424

179776

76225024

20.5912603

7.5125715

.002-353491

425

139625

76765625

20.615.5231

7.5134730

.002:3.52941

426

181476

77303776

20.6397674

7.5243652

.002-347418

427

132329

77S;54433

20.66397S3

7.5302432

.002-341920

423

133134

78402752

20.6331609

7.5361221

.002336449

429

184041

78953539

20.71231.52

7.5419367

.002-331002

430

184900

79507000

20.7.364414

7.5473423

.002325581

431

185761

80062991

20.7605395

7.55.36333

.002:320186

432

1S6624

80621563

20.7846097

7.5595263

.002314315

433

137439

81132737

20.8036.520

7.5653.543

.002.309469

434

1S3356

81746504

20.8326667

7.5711743

1 .002.304147

CUBE ROOTS, AM> R KCll'ROCALS.

145

No.

43.3 4:3fi

•137 ■i.-'S 439

410 4-;i 442 413 444 445 440 447 44S 449

. 450 451 4.52 453 4.54 455 456 457 45S 459

460 461 462 463 46! 465 466 4/57 463 469

470 471 472 473 474 475 476 477 478 479

4S0 481 482 483 484 435 4 So 487 488 439

490 491 492 493 494 495 496

\...

Squares.

189225 1 9U0.;6 1 '.K)ii69 191844 192721

193600 194481 195364 196249 197136 19-025 19^916 I 99S09 200704 201601

202500 203101 2043111 205209 2061 16 207025 207936 208849 209764 210681

211600 212521 21.3444 214369 215296 216225 217156 218089 219024 219961

220900 221841 222784 223729 224676 225625 226576 227529 228484 229441

2.30400 231361 232324 233289 234256 235225 236196 237169 233144 239121

240100 241081 242061 243049 244036 245025 246016

Cubes

Square Roots.

82312875 82881856 83 i^' 3453 Sl(l:;7672 f46('4519

S51e84000 85766121 86350888 8693;307 S752>^3>4 88121125 88716536 89314623 89915392 90518849

9112.5000 91733851 92345403 92959677 93576664 94196375 948 188 16 95443993 96071912 S6702579

97336000

97972181

98611128

99252847

99897344

100.544625

101194096

101847.563

102503232

103101709

103823000 104487111 105154048 10.5823S17 106496424 107171875 1078.50176 1035313.33 10921.53.52 109902239

110592000 1H2S4641 111930168 112678.587 113379904 1140-^4125 114791256 11.5501303 116214272 116930169

117649000 118370771 119095488 119^23157 120553784 121287375 12202.3936

Cube Roots.

20.8566536 20.8806130 20.904.5450 20.9284495 20.9523263

20.9761770 21.0000000 21.0237960 21.0475652 21.0713075 21.0950231 21.1187121 21.142.3745 21.1660105 21.1896201

21.2132034 21.2367606 21.2602910 21.2837967 21.3072758 21.3307290 21.3541565 21.3775583 21.4009346 21.4242853

21.4476106 21.4709106 21.4941853 21.5174348 21.5406592 21.. 5638.587 21.5870331 21.6101828 21.6333077 21.0564078

21.0794834

21.7025344

21.72.55610

21.748,5632

21.7715411

21.7944947

21.8174242-

21.8403297

21.8632111

21.8500636

21.9089023 21.9317122 21.9544984 21.9772610 22.0000000 22.02271.55 22.04.54077 22.0680765 22.0907220 22.11.33444

22.13594.36 22.1.585193 22.1810730 22.2030033 22.2261103 22.2485955 22.2710575

Reciprocals.

7.5769849 7.5827865 7.5885793 7.5943633 7.6001385

7.60.59049 7.6116626 7.6174116 7.6231519 7.6288837 7.6346067 7.6403213 7.0460272 7.6517247 7.0574138

7.6630943 7.6687665 7.6744303

7.6800857 7.6857.323 7.6913717 7.6970023 7.7026246 7.7082388 7.7138448

7.7194426 7.7250325 7.7306141 7.7361877 7.7417532 7.7473109 7.7523606 7.7584023 7.7639261 7.7694620

7.7749301 7.7804904 7.7859928 7! 79 14875 7.7909745 7.80245.38 7.80792.54 7.8133392 7.8188456 7.8242942

7.8297353 7.8351638 7.8405949 7.8460134 7.8514244 7.8568281 7.8622242 7.8676130 7.8729944 7.S7830S4

7.8837352 7.8890940 7.8944403 7.8997917 7.9051294 7.9104.599 7.9157832

.002298851 .002293578 002288330 .002283105 .002277904

.002272727 .002267574 .002262443 .002257330 .002252252 .002247191 .002242152 .002237130 .0022.32143 .002227171

.002222222 .002217285 .002212389 .002207506 .002202643 .002197802 .002192982 .002188184 .00218.3406 .002178649

.00217.3913 .002109197 .002164502 .002159827 .002155172 .002150538 .00214.5923 .002141328 .0021.30752 .002132196

.002127660 .008123142 .002118644 .002114165

.002109705 .002105263 .002100840 .002096436 .002092050 .002087633

.002083333 .002079002 .002074689 .002070393 .002066116 .0020618.56 .002057613 .002053388 .002049180 .002044990

.002040816 .002036660 .002032520 .002028398 .002024291 .002020202 .002(00129

4(5

TABLE Xf. SQUARES, CUBES,

SQUARE ROOTS,

No.

Squares.

Cubes.

Square Roots.

Cube Roots.

Reciprocal*.

497

247009

122763473

22.29:34963

7.9210994

.002012072

493

243001

123505992

22.3159136

7.9264035

,002008032

499

249001

124251499

22.3333079

7.9317104

.002004003

sao

250000

125000000

22.3606793

7.9370053

.002000000

501

2510J1

125751501

22.3330293

7.9422931

.001996003

502

252004

126506033

22.4053565

7.9475739

.001992032

533

253009

127253527

22.4276615

7.9.523477

.001938072

504

254016

12S024064

22.4499443

7.9581144

.001934127

505

255025

123787625

22.4722051

7.9633743

.001930193

506

256036

129554216

22.4944433

7.9636271

.001976285

507

257049

130323343

22.5166605

7.9733731

.001972337

503

253064

131096512

22.5333553

7.9791122

.001963534

509

259031

131372229

22.5610233

7.9343444

.001964637

510

260100

132651030

22. .533 1796

7.9395697

.031960734

511

261121

133432331

22.6353091

7.9947833

.001956947

512

262144

134217723

22.6274170

8.0300000

.0019.53125

513

263169

135005697

22.6495033

8.0352049

.001949318

514

264196

135796744

22.671.5631

8.0104032

.00194.5525

515

265225

136590375

22.6936114

8.0155946

.001941748

518

266256

137333096

22.71.563.34

8.0207794

.001937934

517

267239

133133413

22.7376340

8.0259574

.001934236

518

263324

133991 S32

22.75961.34

8.0311287

.001930502

519

269361

139793359

22.7815715

8.0362935

,001926732

520

270400

140603030

22.8035035

8.0414515

.00192.3077

521

271441

141420761

22.82:54244

8.0466030

.001919386

522

272434

142236643

22.8473193

8.0517479

.001915709

523

273529

143)55667

22.8691933

8.0568862

.001912046

5^4

274576

143377324

22.8910463

8.0620180

.001903397

525

275625

144703125

22.9123785

8.06714.32

.001904762

526

276676

145531576

22.9346399

8.0722620

.001901141

527

277729

1463631 S3

22.9564806

8.0773743

.0018975.33

523

27S734

147197952

22.9732506

8.0324300

.001893939

529

279S41

143035S39

23.0000000

8.0375794

.001390359

530

230900

148377000

23.0217239

8.0926723

.001386792

531

231961

W 972 1291

23.0434372

8.0977.539

.0013332.39

532

233024

150563763

23.0651252

8. 1023390

.001379699

533

234039

151419437

23.0867923

8.1079123

.001876173

534

235156

152273304

23.1034400

8.1129303

.031872659

535

236225

153130375

23.1300670

8.1180414

.001869159

536

237296

153990656

23.15167.33

8.12.30962

.00186.5672

537

23S369

154354153

23.1732605

8.1281447

.001362197

533

239444

155720372

23.194-270

8.1331370

.001353736

539

290521

156590319

23.2163735

8.1332230

.001855288

540

291600

157461000

23.2379031

8.14.32.529

.001851852

541

292631

153340421

23.2594067

8.1432765

.00184*429

542

293764

159223333

23.2303935

8.1532939

.001845018

543

294349

160103007

23.30236134

8.1533051

.031841621

544

295936

163939134

23.3233076

8.1633102

.001833235

545

297025

161378625

23.3452351

8.1633092

.001834362

546

293116

162771336

23.3666429

8.17.33020

.001831502

547

299209

163667323

23.33S0311

8.17S2833

.0018231.54

543

300304

164566592

23.4093993

8.1832695

.001324818

549

301401

165469149

23.4307490

8.1382441

.001821494

550

302500

166375000

23.4520733

8.1932127

.001818182

551

303601

167234151

23.4733392

8.1931753

.001814832

552

304704

163196603

23.4946302

8.2031319

.001811594

553

305309

169112377

23.5159520

8.2030325

.001303318

554

306916

170031464

23.5372348

8.21.30271

.00180.5054

555

303025

170953375

23..55S4330

8.2179657

.001801302

556

309136

171879616

23.5796.522

8.2223935

.001793.561

557

310249

172303693

23.6033474

8.2278254

.031795.3.32

553

311364

173741112

23.6220236

8.2327463

.001792115

CUBE ROOTS, AMD RECIPROCALS.

Ul

No.

559

560 561 562 563 564 565 566 567 563 569

570 571 572 573

574 575 576

577 578 579

580 581 582 5S3 534 585 586 587 588 539

590 591 592 593 594 595 596 597 593 599

600 601 602 603 604 605 606 607 608 609

610 611 612 613 614 615 616 617 618 619 620

Squares.

312481

313600 314721 315844 316969 318096 319225 320356 321439 322624 323761

324900

326)11

327184

32S329

32^)476

330625

331776

332929

334084

335241

336400 337561 338724 339339 341056 342225 343396 344569 345744 346921

aisioo

349231 350464 351619 352836 354025 355216 356409 357604 358801

360000 361201 362404 363609 364316 366025 367236 363449 369664 370S81

372100 373321 374544 375769 376996 37^225 379456 3306S9 331924 333161 3S4400

Cubes

Square Roots.

174676879

175616000 176558481 177504328 178453547 179406144 180362125 181321496 182234263 183250432 1842200JJ

185193000 1S6169411 187149248 183132517 189119224 190109375 191102976 192100033 1 93 1 00552 194104539

195112000 196122941 197137368 193155237 199176704 200201625 201230056 202262003 203297472 204336469

205379000 206425071 207474638 203527357 209534534 210644875 21170S736 212776173 213.347192 214921799

216000000 217031801 218167208 219256227 220343864 221-445125 222545016 223643543 224755712 225366529

226931000 225099131 229220923 230346397 23147.5544 232608375 233744396 234335113 236029032 237176659 23S32S000

Cube Roots.

23.6431803

23.6643191 23.6854336 23.7065392 23.7276210 23.7486842 23.7697236 23.79117545 23.8117618 23.8327506 23.8537209

23.8746723 23.8956063 23.9165215 23.9374184 23.9582971 23.9791576 24.0000000 24.0208243 24.0416306 24.0624183

24.0S31S91 24.1039416 24.1246762 24.1453929 24.1660919 24.IS67732 24.2074369 24.2230329 24.2487113 24.2693222

24.2S991.56 24.3104916 24.3310501 24.3515913 24.3721152 24.3926213 24.4131112 24.4335334 24.4540335 24.4744765

24.4943974 24.5153013 24.5.3.56383 24.5560583 24.5764115 24.5967473 24.6170673 24.6.373700 24.6576560 24.67792.54

24.6981781 24.7184142 24.7386333 24.7.583363 24.7790234 24.7991935 24.3193473 24.3.394347 24.3596058 24.8797106 24.3997992

Reciprocals.

8.2.376614

S. 2425706 8.247474') 8.2523715 8.25726.33 8.2621492 8.2670594 8.2719039 8.2767726 8.2316355 8.2S64928

8.2913444 8.2961903 8.3010304 8.3053651 8.3106941 8.3155175 8.3203353 8.3251475 8.3299542 8.3347553

8.3395509 8.344-3410 8.^4912.56 8.3539047 8.3536734 8.3634466 8.3632095 8.3729668 8.3777188 8.3324653

8.3372065 8.3919423 8.3966729 8.4013981 8.4061180 8.4103326 8.4155419 8.4202460 8.4249448 8.4296333

8.4343267 8.4390098 8.4436377 8.4433605 8.4530231 8.4576906 8.4623479 8.4670001 8.4716471 8.4762892

8.4309261 8.4355579 S.4901S43 8.4943065 8.4994233 8.5ai0.350 8.5086417 8.5132435 8.5173403 8.-5224321 8.5270139

.001783909

.001785714 .001732531 .001779359 .001776199 .001773050 .001769912 .001766784 .001763663 .001760563 .001757469

.001754336 .001751313 .001748252 .001745201 .001742160 .0017391-30 .001736111 .001733102 .001730104 .001727116

.001724138 .001721170 .001718213 .001715266 .001712329 .001709402 .001706135 .001703.578 .001700630 .001697793

.001694915 .001692047 .001639189 .001636.341 .001633502 .001630672 .001677852 .001675042 .001672241 .001669449

.001666667 .001663394 .001661130 .0016.53375 .001655629 .001652393 .0016-50165 .001647446 .001644737 .001642036

.001639344 .0016.36661 .001633987 .001631321 .001623664 .001626016 .001623377 .001620746 .001613123 .001615509 .001612303

L4W

TABLE XI. SQUARES, CUBES,

SQUARE ROOTS,

No.

Squares.

Cubes.

Square Roots

Cube Roots.

1

Reciprocal*.

621

3 356 11

239433061

24.9193716

8.5316309

.031610306

622

336334

240641343

24.9399273

8. 5361 730

.031607717

623

333129

241304367

24.9599679

8.5407501

.001605136

624

339376

242970624

24.9799920

8. .54531 73

.001602564

625

39J625

244140625

25.0330000

8.5493797

.001600000

626

391376

245314376

25.0199920

8.5.544372

.001597444

627

393129

246491333

25.0.399631

8.-5539399

.001.594396

62S

394334

217673152

25.0599232

8.563.5377

.001592:357

629

395641

243353139

25.0793724

8.5633307

.001.539325

630

396903

250047000

25.0993003

8. -5726 139

.001537302

631

393161

251239591

2.5.1197134

8.577152:3

.001.534736

632

399424

252435963

25.1.396102

8-5316309

.001.532273

633

400639

253636137

25.1594913

8.5362047

.001.579779

634

401956

254340104

25.1793566

8.59t)7233

.0)1.577237

635

403225

256047375

2.5.1992063

8.5952330

.001574303

636

404495

257259456

25.2193404

8.5997476

.001-572327

637

405769

253474353

25.2333539

8.6342.525

.001.5693-59

63 S

407044

259694072

25.2536619

8.6037526

.001.567:393

639

403321

■260917119

2-5.2734493

8.61.32430

.001.564945

61)

409690

262144030

25.2932213

8.6177333

.001-562-500

641

410331

253374721

25.3179773

8.6222243

.001560062

612

412164

264639233

25.3377139

8.6267063

.0015-576:32

613

413149

265347707

25.3574447

8.6311330

.001-5-5-5210

614

414736

267039934

25.3771551

8.6-3.56551

.001-552795

615

416925

263336125

25.3963502

8.6401226

.001-553333

646

417316

269536136

2.5.4165301

8.6445355

.001547938

647

413609

270340023

25.4361947

8.6493437

.001-545595

643

419904

272097792

2.5.4553441

8.65:34974

.00154-3210

649

421201

273359449

25.47.54734

8.6579465

.00] 540-^.32

650

422503

274625000

25.4950976

8.6623911

.0015:33462

651

423301

275394451

25.5147016

8.6663310

.0015:36093

652

425104

277167303

25.5342907

8.6712665

.00l5:-;3742

653

426409

273445077

25.5533647

8.G756974

.001.531394

654

427716

279726264

25.5734237

8.63012:37

.001529(152

655

429025

231011375

25.-5929673

8.634;54.56

.001526713

656

433336

232300416

25.6121969

8.6339633

.001.524.390

657

431649

233593393

25.632flll2

8.693:3759

.001-522070

653

432951

234390312

2.5.6515107

8.6977343

.031519757

659

434231

236191179

25.6709953

8.7021332

.001517451

660

435630

237496000

25.69346-52

8.7065377

.001515152

661

436921

233304731

25.7099203

8.7109327

.001512359

662

433244

293117523

25.729.3607

8.71.5-37^4

.001510574

663

439569

291431247

25.7437364

8.7197596

.001503296

664

440396

292754944

25.7631975

8.7241414

.001.506024

655

442225

294079625

25.73759-39

8.7235187

.001503759

666

443556

295403298

25.3069753

8.7.323913

.031501502

657

444399

296740963

25.8263431

8.7372604

.0014992.50

66S

446224

293077632

25.3456960

8.7416246

.001497006

669

447561

299413309

25.3650343

8.7459346

.001494763

670

443903

300763000

25.8343-532

8.7503401

.001492537 \

671

450241

302111711

25.9036677

8.7.546913

.001490313

672

451534

3)3164443

25.9229623

8.7.590333

.001433095

673

452929

304321217

25.9422435

8.76-33309

.001435334

674

454276

306132024

2.5.9615100

8-7677192

.001433630

675

455625

307546375

25.9307621

8.7720532

.001431431

676

456976

303915776

26.0300300

8.77633.30

.001479290

677

453329

310233733

26.0192237

8.7307034

.001477105

673

4596 34

311665752

26.03S433I

8.73-50296

.001474926

679

461041

313346339

26.0576234

8.789-3466

.001472754

630

462400

314432000

26.0763096

8.7936.593

.001470.533

631

453761

315321241

26.09-59767

8.7979679

.03146^129

632

465124

317214563

26.1151297 '

8.3022721

.001466276

CUBE ROOTS, AND IIECIPROCALS.

149

No.

6-3 6-4 6 So 6S6 6S7 6S3 659

690

691

692

693

694

695

696

697

69S

699

700 701 702 703 704 705 706 707 703 709

710 711 712 713 714 715 716 717 71S 719

IL

720

721

722

723

724

725

726

727

723

729

730

731

732

733

734

735

736

737

733

739

740 741 742 743 744

Squares.

4G64S9 467S.36 469225 470596 471969 473344 474721

476100 477431 473S64 4S0249 4S1636 4S3025 434416 4S5309 437204 433601

490001 491401 492304 4942'i9 495GI6 497025 49S436 499S49 501264 502631

504100 505521 506944 503369 509796 511 225 512656 514039 515524 516961

Cubes.

Square Roots.' Cube Roots. Reciprocals.

513 100 519341 521234 522729 524176 525625 527076 523529 529934 531441

532900 534361 535324 5372S9 533756 540225 541696 543169 544614 5-16121

547600 549)31 550564 552049 553536

31S611937 320013504 321419125 322323356 324242703 325660672 327032769

323509000 329939371 331373333 332312557 334255334 335702375 337153536 33S60S373 340063392 341532099

343000000 344472101 34594340S 34742-927 343913664 350402625 351-95316 353393243 354394912 356400329

357911000 359425431 360944123 362467097 363994344 365525375 367061696 363601313 370146232 371694959

373245000 374305361 376367048 377933067 379503424 331073125 332657176 354240533 33532,3352 337420439

3^9017000

390617591

392223163

393532537

395446904

397065375

39563,3256

400315553

401947272

403533419

405224000 406>69021 40>5134S8 41(»172407 411530734

26.1342687 26.15:3.3937 26.1725047 26.1916017 26.2106543 26.2297541 26.2433095

26.2678511

26.256.3739 26.30.53929 26.3245932 26.3435797 26.3623527 26.331S119 26.4tM375r6 26.4196396 26.4356031

26.4575131

26.4764046

26.49.52526

26.5141472

26.5329933

26.551,5361

26.571 6605

26..5594716

26.60-2694

26.6270539

26.64-552.52 26.6645333 26.6533231 26.7020593 26.7207784 26.73945.39 26.7551763 26.7765557 26.7955220 26.81417.54

26.8.323157 26.85144.32 26.8700577 26. ,8536593 26.9072481 26.9255240 26.9443572 26.9629375 26.9514751 27.0000000

27.0185122 27.0370117 27.0.5.549-5 27.0739727 27.0924344 27.1105334 27.1293199 27.1477439 27.1661554 27.184.5544

27.2029410 27.22131.52 27.2.396769 27.2550263 27.2763634

8.8065722 8.8108631 8.8151598 8.819^1474 8.8237307 8.8250099 8.8322550

8.8365559 8.84(15227 8.3450554 8.8493440 3.85359.35 8.8575489 8.8620952 8.8663375 8.8705757 8.8748099

8.8790400 8.6532661 8.8874582 8.3917063 8.8959204 8.9001304 8.9043:^6 8.9035337 8.9127369 8.9169311

8.9211214 8.925.3073 8.9294902 8.9336687 8.9375433 8.9420140 8.9461509 8.9503433 8.9545029 8.9556581

8.9623095 8.9669570 8.9711007 8.9752406 8.9793766 8.9335089 8.9876373 8.9917620 8.9953329 9.0000000

9.0041134 9.0052229 9.0123233 9.0164309 9.0205293 9.0246239 9.0287149 9.0325021 9.0365357 9.0409655

9.04.50419 9.0491142 9.0531831 9.0572482 9 0613098

.ft01464129 .001461933 .001459854 .001457726 .001455604 .001453483 .001451379

.001449275 .001447173 .001445087 .00144.3001 .001440922 .00143-.549 .001436782 .0014:34720 .0014:32665 .0014.3C615

.001423571 .001426534 .001424501 .001422475 .001420455 .001418440 .001416431 .001414427 .001412429 .001410437

.001403451 .001406470 .001404494 .001402525 .001400560 .00139860! .001396648 .001:394700 001392758 .001390821

.001388889 .001356963 .00135.5042 .001333126 .001331215 .001379310 .001.377410 .00137.5516 .001373626 .001371742

.001369363 .001:167959 .001366120 .001364256 .roi 362398 .001360544 .001355696 .001356352 .001355014 .001353180

.001351351 .001349528 .001347709 .001:345.-95 .001344036

15U

TABLE XI SQUARE

S, CUBES,

SQUARE R(

)OTS,

No.

Squares.

Cubes.

Square Roots.

Cube Roots.

Reciprocala.

745

555025

4134936i5

27.2946331

9.0653677

.001342232

746

556516

415160936

27.3130006

9.0694220

.001340433 .

747

55S039

416332723

27.3313007

9.0731726

.001333638

74S

559504

413503992

27.3495337

9.0775197

.001336-93

749

561031

4201 39749

27.3673644

9.0315631

.001335113

750

562500

421375000

27.3361279

9.0356030

.001333333

751

564001

423564751

27.4043792

9.0396.392

.001331553

752

565501

425259003

27.4226134

9.0936719

.001329737

753

567009

426957777

27.4403455

9.0977010

.001323021

754

563516

423661064

27.4590604

9.1017265

.001326260

755

570025

430363375

27.4772633

9.1057435

.001324503

756

571536

432031216

27.4954542

9.1097669

.001322751

757

573 )49

433793093

27.5136330

9.1137818

.001321004

75S

574564

435519512

27.5317993

9.1177931

.031319261

759

576031

437245479

27.5499546

9.1213010

.001317523

7^,0

577600

433976000

27.5630975

9.1253053

.001315739

761

579121

440711031

27.5362234

9.1293061

.001314060

76-2

5S0644

442450723

27.6343475

9.13.330a4

.001312336

763

532169

444194947

27.6224546

9.1377971

.001310616

764

583696

445943744

27.6405499

9.1417374

.001303901

765

535225

447697125

27.6536334

9. 1457742

.001307190

766

536756

449455096

27.6767050

9.1497576

.001305483

767

533239

451217663

27.6947643

9.1537375

.001-303781

763

539324

452934332

27.7123129

9.1.5771.39

.001302033

769

591361

454756609

27.7303492

9.1616369

.001300390

770

592900

456533000

27.74337.39

9.16.56565

.001293701

771

594441

453314011

27.7663363

9.1696225

.001297017

772

595934

463399648

27.7843330

9.17353.52

.001295337

773

597529

461839917

27.3023775

9.1775445

.00129:^661

774

599 i-e

463634324

27.8203555

9.1315003

.001291990

775

603625

465434375

27.8333218

9.18.54527

.001290323

776

602176

467233576

27.3567766

9.1394018

.001233660

777

603729

469397433

27.8747197

9.1933474

.001237001

773

605234

470910952

27.3926514

9.1972397

.00123.5.347

779

636341

472729139

27.9105715

9.2012236

.001233697

780

633400

474552000

27.9234301

9.2051641

.001282051

73 1

609961

476379541

27.9463772

9.2090962

.001230410

732

611521

473211763

27.'J042629

9.21302.50

.031278772

783

613039

430043637

27.9321372

9.2169505

.001277139

784

614656

431590304

28.00313030

9.2203726

.001275510

733

616225

433736625

23.0178515

9.2247914

.001273385

736

617796

435537656

23.0.356915

9.2237063

.001272265

737

619369

43744:J403

23.0535203

9.2.326189

.001270648

733

620944

4393)3372

23.0713377

9.236.5277

.001269036

789

622521

491169069

23.03914.33

9.2404333

.001267427

790

624100

493039000

23.1069336

9.244.3355

.001265323

791

625631

494913671

23.1247222

9.2432344

.001264223

792

627264

496793033

28.1424946

9.2.521300

.001262626

793

623S49

493677257

23.1602.557

9.2560224

.0012610:J4

794

630436

503566134

23.17303-56

9.2599114

.0312.59446

795

632325

502459375

23.1957444

9.2637973

.001257362

796

633616

504353336

23.2134720

9.2676793

.001256281

797

635209

506261573

28.2-311834

9.2715592

.001254705

793

636304

503169592

23.2433933

9.2754.3.52

.0012.5313?

799

633401

510032399

23.266.5831

9.2793031

.001251564

300

640000

512000000

28.2342712

9.2831777

.001250000

801

641601

513922431

23.3019434

9.2370440

.0012434.39

802

643204

515349603

23.3196045

9.2909072

.001246333

803

644309

517731627

23.3372546

9.2947671

.0012453.30

sai

646416

519713464

23.3.543933

9.2936239

.001243781

805

643025

521660125

23.372.5219

9.3024775

.001242236

806

649636

523636616

23.3901391

1 9.3063273

.001240695

CUBE ROOTS, AND RECIPROCALS.

151

No.

Squares.

Cubes. i

Square Hoots.

Cube Roots.

Reciprocals.

807

651219

.525557943

23.4077454

9.3101750

.001239157

803

652364

527514112

28.4253403

9.3140190

.001237624

809

6.54431

529475129

23.44292.33

9.3178599

.001236094

810

656100

531441000

23.4604939

9.3216975

.001234563

811

657721

533411731

23.4780617

9.325.5320

.001233046

812

6593 14

5353S7323

23.4956137

9.3293634

.001231527

813

660369

537367797

23.5131549

9.3331916

.001230012

814

662596

.539353144

23.5.3063.52

9..3370167

.001223.301

815

661225

541343375

23.. 5432043

9.3403336

.001226994

816

665356

543338496

23.5657137

9.3146575

.00122.3490

817

6674S9

545333513

23. .533211 9

9.3434731

.001223990

81^

66 J 124

547343432

23.6006993

9.3522357

.001222494

819

670761

549353259

23 6131760

9.3560952

.001221001

820

67240)

5513630X

23.63.56421

9.3599016

.001219512

821

674041

553337661

23.6530976

9.3637049

.001213027

822

675634

555412213

23.6705424

9.3675051

.001216545

823

677329

557441767

23.6S79766

9.3713022

.00121.3067

824

673976

559476224

23.7054002

9.3750963

.001213.592

825

6S0625

561515625

23.7223132

9.3733373

.001212121

826

632276

563559976

23.7402157

9.33267.32

.001210654

827

6S3929

565609233

23.7576077

9.3364600

.001209190

82S

635534

567663552

23.7749391

9.3902419

.001207729

829

6S7241

569722739

23.7923601

9.3940206

.001206273

830

633900

571737000

23.8097206

9..3977964

.001204319

831

690561

573356191

23.8270706

9.4015691

.001203369

832

692224

575930363

23.3444102

9.40533S7

.001201923

833

693339

578009537

23.3617394

9.4091054

.001200430

834

695556

580093704

23.3790532

9.4123690

.001199041

835

697225

532132375

23.S963666

9.4166297

.001197605

836

693396

534277036

23.9136646

9.4203373

.001196172

837

700569

536376253

23.9309523

9.4241420

.001194743

S3S

702244

533430472

23.9432297

9.4278936

.001193317

839

703921

590:89719

23.96.54967

9.4316423

.001191395

840

705600

592704000

23.93275.35

9.4353380

.001190476

841

7072SI

594323321

29.0000000

9.4.391.307

.001139061

842

703964

596947633

29.0172.363

9.4123704

.001187643

843

710349

599077107

29.0344623

9.4466072

.001136240

844

712336

601211534

29.0516731

9.450.3410

.001184334

845

714025

603331125

29.0633337

9.4510719

.001183432

846

715716

605495736

29.0360791

9.4577999

.001132033

847

717409

607645423

29.1032644

9.4615249

.001130633

848

719104

609300192

29.1204396

9.46.52470

.001179245

849

720301

611960049

29.1376046

9.4639661

.001177856

850

722500

614125000

29.1.547595

9.4726324

.001176471

831

724201

616295051

29.1719043

9.4763957

.001175033

852

725904

613470203

29.1390390

9.4301061

.001173709

853

727609

620650477

29.2061637

9.4333136

.001172333

854

729316

622335364

29.2232734

9.4375182

.001170960

855

731025

625026375

29.2403331

9.4912200

.001169.591

856

732736

627222016

29.2574777

9.4949133

.001163224

857

734449

629122793

29.274.5623

9.4936147

.001166361

853

736164

63162>712

29.2916370

9.5023073

.001163.501

859

737331

633339779

29.3037018

9.50.59930

.001164144

860

739600

636056000

29.3257566

9.5096354

.001162791

861

741321

633277331

29.3423015

9.51.33699

.001161440

862

743044

610503923

29.3593365

9.5170515

.001160093

863

744769

642735647

29.3763616

9.5207303

.001153749

864

746 196

6 14972544

29.3933769

9.5244063

.001157407

865

743225

617214625

29.4103323

9. .5230794

.001156069

866

749956

619161896

29.4273779

9.5317197

.001154734

867

751639

651714363

29.4443637

9.53.34172

.001153403

863

,

753424

' 653972032

29.4613397

9.5390318

.001152074

152

TABLE XI.

SQUARES, CUBES, SQUARE KOO/S,

No.

S69

870 871 872 873 874 875 876 877 878 879

880 88 1 882 8S3 8.S4 SSo 856 837 8.38 SS9

890 891 892 893 894 895 896 897 893 899

900 901 902 903

9m

9135 906 907 90S 909

Squares.

920 921 922 923 924 925 926 927 923 929 930

755161

756900 7;:?&41 7603S4 762129 76;JS76 765625 767376 769129 770S34 772641

774400 776161 777924 7796S9 781456 7S3225 784996 7S6769 78S.544 790321

792100 793>S1 795664 797449 799236 801f!25 802S16 804609 806404 80S20I

810000 81IS01 813604 815409 817216 819025 820S36 822649 824464 826231

Cubes.

910

S2S10V-)

911

829921

912

S3 1 744

913

83:3569

914

835396

915

837225

916

839056

917

&103S9

918

842724

919

844561

S46400 84S241 850054 851929 853776 855625 857476 859329 861154 863041 864900

Square Roots.

656234909

65.S503000 660776311 6630.54S43 665335617 667627624 669921575 672221376 674526133 676-36152 679151439

651472000 6S3797S41 6-612S965 65S4653S7 69OS071O4 693154125 695506456 697864103 7ai227072 702595369

704969000 707347971 709732258 712121957 714516954 716917375 719:323136 7217:34273 724150792 726572699

729000000 731432701 73-35705(:«3 7:36314:327 7-3576:3264 741217625 74:3677416 746142643 74561:3312 751059429

753571000 756055031 75555052S 761045497 76:3551944 766360575 76-575296 771095213 77:362(;'632 776151559

77S65.5000 781229961 7.53777445 756:330467 785559024 791453125 794022776 796597S53 79917S752 801765059 804357000

Cube Roots.

29.4788059

29.4957624 29.5127091 29.5296461 29..S1657.^ 29.56:34910 29.580:3959 29.5972972 29.6141555 29.6310&JS 29.rA79M2

29.6647939 29.6516442 29.6934545 29.7153159 29.7:321:375 29.7459496 29.7657521 29.732.54.52 29.799:3259 29.3161030

29.5:325678 29.5496231 29.566:3690 29.5531056 29.3995.328 29.916-5506 29.93:32-591 29.9499-533 29-9666431 29.95:3.3257

30.0000000 30.0166620 30.03:33143 30.0499554 3(». 0665923 30.03:32179 30.099-:339 30.1164407 30.1:3:30:353 30.1496269

30. 1662063 30.1527765 30-199:3-377 30.21-55599 30.2-324:329 30.2459669 3<t. 26.549 19 30.2320079 30.29-5143 30.31-50123

30-3-31-5013 30.^479313 30.3644529 30..3309151 30.397:3653 30.41-35127 30.4302451 30.4466747 30.46-30924 30.4795013 30.4959014

Reciprocals.

9.5427437

9.5464027 9.5500539 9.5-537123 9.55736:30 9.5610103 9. -5646.559 9.5652932 9.5719377 9.5755745 9.5792055

9..552>:397 9.5564632 9.5900939 9.5937169 9.-5973373 9.6009.545 9.604-5696 9.6051517 9.6117911 9.615:3977

9.619f)017 9.6226030 9.6262016 9.6297975 9.6:3:3:3907 9.6369512 9.64(t5690 9.&44h542 9.6477:367 9.65131C6

9.6.5459.33

9.6-534654

9-6620403

9.66-5G096

9.6691762 '

9.6727403

9.6763017

9.6795604

9.6534166

9.6.569701

9.690521 1 9.6940694 9.6976151 9.701 1;583 9.7046959 9.7052-369 9.7117723 9.71^3051 9.713-:354 9.722:3631

9.7255853 9.7294109 9.7329:309 9.7364454 9.7399634 9.74:^753 9.7469557 9.7.504930 9.7539979 9.7575002 9.7610001

.001 1.50743

.001149425 .001145106 .001146759 .001145475 .001144165 .001 142357 .001141553 .001140251 .001 13-952 .0011:37656

.00113n:i64 .0011.3.5074 .0011:3.3757 .001132503 .001131222 .001129944 .001123663 .001127396 .001126126 .001124559

.00112.3596 .■001122:3:34 -001121076 .001119521 .001113568 .001117313 .001116071 .001114527 .00111.3.556 .001112:347

.001111111 .001109578 .001105&47 .001107420 .0(01106195 .001104972 .00110.3753 .001102536 .001101.322 .001100110

.001095901 .001097695 .001096491 .001095290 .001094092 .001092396 .001091703 .001090513 .001059:325 .001055139

.001056957 .001055776 .001084.599 .0010S:M23 .001052251 .0010810.31 .001079914 .001078749 .001077556 .001076426 .00107.5269

CUBE ROOTS, iND RECIPROCALS.

153

No.

Squares.

Cubes.

Square Roots.

Cube Roots.

Reciprocals.

931

866761

806954491

30.5122926

9.7644974

.001074114

932

S6S624

809557563

30. .5236750

9.7679922

.001072961

933

870439

812166237

30.5450437

9.7714345

.001071811

934

872356

814730501

30.5614136

9.7749743

.001070664

935

874225

817400375

30.5777607

9.7734616

.001069519

933

876 J36

820025356

30..5941171

9.7820466

.001063376

937

877969

822656953

30.6104.557

9.7854233

.001067236

93S

879344

825293672

30.6267357

9.7339037

.001066098

939

831721

827936019

30.6431069

9.7923361

.001064963

940

833600

833534000

30.6594194

9.7953611

.001063330

941

835481

833237621

30.6757233

9.7993336

.001062699

942

8^7364

835396333

30.6920185

9.30230.36

.031051571

943

8^9249

833561307

30.7033051

9.8062711

.001060445

944

891136

841232334

3' (.7245330

9.8097362

.0010.59322

945

893')25

843903625

30.7403523

9.8131989

.001053201

. 946

894916

S46590536

30.7571130

9.8166591

.001057082

947

896309

849273123

30.7733651

9.8201169

.001055966

943

893704

85197 L392 854670349

30.7896036

9.8235723

.0010.54852

949

9)0601

30.8053436

9.8270252

.0010.53741

950

902500

857375000

33.3223700

9.8.304757

.0010.32632

951

901401

860035351

30.3332379

9.3339233

.001051525

952

9063 )4

862301403

30.8544972

9.8373895

.0010.50420

953

903209

865523177

30.8706931

9.3403127

.001049313

954

910116

863250664

.30.3863904

9.8442536

.001048213

955

912025

870933375

.30.9030743

9.8476920

.001047120

956

913936

S73722316

30. 9 1'j24 97

9.8511230

.031046025

957

915349

876467493

30.93.54166

9.8545617

.001044932

958

917764

879217912

30.9515751

9.8579929

.00104.3341

959

919631

831974079

30.9677251

9.8614218

.031042753

960

921600

834736000

30.9333663

9.8643433

.001041667

961

923521

837503631

31.0000000

9.8632724

.001043533

962

925444

890277123

31.0161243

9.8716941

.0010.39501

963

927369

89305G347

31.0322413

9.8751135

.0010.33422

964

929296

895341344

31.0433494

9.8785305

.001037344

965

931225

893632125

31.0644491

9.8319451

.001036269

966

933156

901423696

31.0835405

9.8353574

.001035197

9o7

935039

904231063

31.0966236

9.8337673

.001034126

96^

937024

907039232

31.1126934

9.8921749

.001033353

969

933961

909353209

31.1237643

9.89.55301

.001031992

970

940301

912673000

31.1443230

9.8939330

.001030928

971

942-^11

915493611

31.1633729

9.9023S35

.001029366

972

9447S4

913333043

31.1769145

9.9057317

.001023307

973

946729

921167317

31.1929479

9.9091776

.001027749

974

943676

924010424

31.2039731

9.912-3712

.001026594

j 97c

950625

926359375

31.2249900

9.91.59624

.001023641

J

976

952576

929714176

31.2409937

9.9193513

.001024590

977

954529

932574333

31.2560992

9.9227379

.001023.341

973

956434

935441352

31.2729915

9.9261222

.001022495

979

953441

93S313739

31.2339757

9.9295042

.001021450

930

960400

941192003

31. .304951 7

9.9323339

.001020403

931

962361

944076141

31.3209195

9.9362613

.031019363

932

964324

946066! 63

31.3363792

9.9396.363

.001018330

933

9662S9

949;:62337

31.3523303

9.94.30092

.001017294

94

96325'6

952763904

31.3637743

9.9463797

.001016260

935

970225

955671625

31.3347097

9.9497479

.001015223

'■j-6

972196

9535^52.56

31.4006369

9.9.531133

.031014199

9S7

974169

951504303

31.4165.361

9.9.564775

,001013171

93S

976144

964430272

31.4324673

9.9593389

.001012146

939

978121

967361669

31.4433704

9.9631931

.001011122

990

930100

970299000

31.4642654

9.9665549

.001010101

991

932031

973242271

31.430152:5

9,9699095

.001009082

992

934064

976191433

31.4960315

9.9732619

.001008065

1D±

TABLE XI. SQUARES, CUBES, &C.

No.

Squares.

Cubes.

Square Roots.

Cube Roots.

Reciprocals.

993

956049

9791466.57

31. .51 19025

9.9766120

.001007049

994

933036

982107784

31.5277655

9.9799.599

.001006036

99.5

990025

935074375

31.54.36206

9.93.33055

.001005025

996

992016

933047936

31.5594677

9.9&66488

.001004016

997

994)09

991026973

31.5753063

9.9899900

.001003009

993

996004

994011992

31.5911380

9.9933289

.001002004

999

993001

997002999

31.606.613

9.9966656

.001001001

1000

1000000

1000000000

31.6227766

10.0000000

.001000000

1001

1002001

1003J0.3001

31.6.33.5340

10.0033322

.0009990010

1002

1004004

1006012003

31.6.543836

100066622

.0009980040

1003

10i'6!09

1009027027

31.67017.52

10 0099599

.0009970090

1 1004

100S0I6

1012043064

3 1.63 59:' 90

lOO 1.331 55

.0009960159 1

1005

1010025

101.5075125

31.7017319

100166339

.0009950249 !

! 1006

1012036

1018103216

31.7175030

10.019C60]

.0009940358 i

1007

1014049

1021147.343

31.7332633

10.02.32791

.0009930487 j

1003

1016064

1024192512

31.74901.57

IO02659.53

.0009920635

1009

1018031

1027243729

31.7647603

100299104

.0009910803

1010

1020100

1030.301003

31.7804972

10.0.332228

.0009900990

j 1011

1022121

1033.364331

31.7S^62262

10.0.3653.30

.0009391197

i 1012

1024144

10.36433723

31.8119474

100393410

.0009881423

1013

1026169

1039.509197

31.8276609

1O0431469

.0009371668

1014

1023196

1W2590744

31.84.3.3666

100464.506

.0009561933

1015

1030225

104.5678375

31.8590646

10.0497521

.0009852217

1016

1032256

1048772096

31.8747.549

1O0.530514

.0009-842520

1017

10342S9

1051871913

31.8904374

10.0563435

.0009832842

1018

1036324

10.54977332

31.9061123

10.0596435

.0009323133

1019

1033361

1053039359

31.9217794

100629364

.0009813543

1020

\yinioz

r06 1203000

31 9374388

10.0662271

.0009803922

1021

i'34244I

1064332261

31.9.530906

1006951.56

.0009794319

1022

1044434

1067462643

31.9637347

10.072-020

.0009784736

1023

1046529

1070599167

31.984.3712

100760-63

.0009775171

1024

1013576

1073741324

32.0000000

10.0793634

.0009765625

1025

1050625

1076^90625

32.0156212

10.0326434

.0009756098

iOv6

1052676

1030045576

32.0.3*2:343

100-59262

.0009746589

1 1027

10.54729

1083206633

32.0463107

10.0392019

.0009737098

1023

10.56784

10S6373952

32.0624391

10.0924755

.0009727626

1029

10.58341

1039.547389

32.0730293

10.0957469

.0009718173

1030

1060900

1092727000

32.09.36131

10.0990163

.000)9708738

1031

1062961

109.5912791

32.1091337

10.10228.35

.0009699321

1032

106.3024

1099104763

.32.1247563

lO105r>187

.0009639922

1033

1067039

1102.3029.37

32.1403173

10 10381 17

.0009680542

1031

1069156

1105.507.304

.32.1.5.58701

10.1120726

.0009671180

1035

1071225

1108717375

32.1714159

1011.5.3314

.0009661836

1036

1073296

1111934656

32.18695.39

10.118.5832

.0009652510

I 1037

1075.369

11151.576.53

32.2024344

10.1218428

.0009643202

1033

1077444

11133>56872

32.2180074

10.12.509.53

.00096.3391 1

1039

1079.521

1121622319

32.2335229

101283457

.0009624639

1040

I0316!J0

1124364000

32.2490310

10.131.5941

.000961.5335

H"41

1033631

1123111921

32.264.5316

101.343403

.0009606143

li42

1035761

1131366033

32.2800248

1O1.3S0345

.0009596929

if 43

1037349

1134626507

32.2955105

lO 1413266

.0009587738

1044

1039936

1137393134

32.3109338

10.1445667

.0009578.514

1045

1092125

1141166125

32.3264598

101478047

.0009569378

1046

1094116

114444.5.336

32.3419233

101510406

.0009560229

1047

1096209

1 147730-23

32.3573794

101.542744

.0009551098

104S

1093.304

1151022592

32.3723231

10.1575062

.0009541985

1049

1100401

1154320649

32.3882695

10.1607.3.39

.0009532888

in50

1102.500

11.5762.50ao

32.4037035

lO 1639636

.0069.52.3810

1051

1104601

1160935651

32.4191.301

101671393

.0009514748

1052

1106704

1164252608

32.434.5495

10 1704 1 29

.0009505703

1053

1103309

1167575377

32.4499615

101736:M4

.00O94S6676 |

io.:4

1110916

117090.5464

32.4653662

10176^539

.00OP437666

f^.^

0 ./ 0

? !

^j ^, t.i^ V y bC

\

?

i

-

1-

A ^ TABLE XII.

,/. ^^^,. ..

■*

"

LOGARITHMS OF NUMBERi

c; //

-*

FROM 1 TO 10,000

-..

^

4

1

\

156

TABLE XII. LOGARITHMS

Of

NUMBERS.

Ino.i

0 1 1 1 OOUOijG 000434]

3 000S63

3

001301

4.

5

6 1 7 i 8

9 iDiff.

100

001734

002166

002598003029 003461

003691

432

1

4321

4751

5181

5609

603-

6466 6394!

7321 1 7748

8174| 428

2

8600

90261

9451

9376 0103001

010724 011147

011570 011993

0124151 424

3'

012S37

013259

0136S0

014100:

4521

4940

5360

5779'

6197

6016

420

4

7033

74511

7868

82^41

8700

9110

9532

9947

020361

020775

416

5

021189

021603

022016

022423 022341

023252

023664

024075

4466

4896

412

6

5306

5715;

6125

6533; 6942

7350

7757i

8164

8571

8978

408

7

93S4

9789

030195

0.30600^

031(104

031408

031812'

032216 032619!

03:3021

404

8

033424 7426

03:3326

4227

4623

5029

5430

.5830

6230

6629

702ft

400

9

7825

8223

8620 ;

9017

9414

9811

040207

040602

040998

397

no

041393

041787

042182

1

042576

042969

043362

043755

044148

044540

044932

393

1

5323

5714

6105

6195'

63S5

7275

7664

8053

8442

6830

390

2

9218

9606

9993

050380

050766

051153

051538

051924

052309

052694

336

3

053076

053463

053^:46 4230

4613

4996

5378

5760

6142

6524

383

4

6905

72-6

7606 80^6

8426

8805

9185

9563

9942

060320

379

5

06069S

061075

061452 001829

002206

062582

062958

063333

063709

4083

376

6

445S

4S32

5206

55S0

5953

6326

6099

7071

7443

7815

373

7

8186

8557

892S

9293

9663

070038

070407

070776

071145

071514

370

8

0718S2

072250

072617

072985

073352

3718

4085

4451

4816

5182

3G0

9

5547

5912

6276

6640

7004

7303

7731

8094

8457

8819

363

120

079181

079543

079904

0S0266

030626

080987

081347

081707

082067

082426

360

1

0327S5

083144

0S3503

3361

4219

4576

4934

5291

5647

6004

357

2

6360

6716

7071

7426

7781

8136

8490

8845

9198

9552

355

3

9905

09025S

090611

090963

0913t5

091667

092018

092370

092721

093f!71

352

4

093422

3772

4122

4471

4820

5169

5518

6866

6215

6562

349

. 5

6910

7257

7604

7951

8293

86^14

8990

9335

9631

100026

340

6

100371

100715

1010.59

101403

101747

102091

102434

102777

103119

3462

;343

7

3S04

4146

4487

4828

5169

5510

5851

6191

6531

6371

341

8

7210

7549

7883

8227

8565

8903

9241

9579

9910

n0253

338

9

110590

110926

111263

111599

1119:34

112270

112605

112940

113275

3609

335

130

1139t3

114277

il4611

114944

115278

11.5611

11.5943

116276

11600ft

116940

333

1

7271

7603

7931

8265

8595

8926 9256!

9586

9915

120245

330

2

120574

120903

121231

121560

121838:12221'>|122544|

122871

123198

3525

328

3

3S52

4178

4504

4330

5156

.5481 5806

6131

6-356

6781

325

4

7105

7429

7753

8076

8399

8722 9045

9368

9690

130012

323

5

130334

130655

130977

131298

131619

131939 132260

132580

132900

3219

321

6

3539

3-^5S

4177

41P6

4314

5133 5451

5769

60S6

6403

318

7

6721

7037

7354 7671

7987

8.303 8r,18

8934

9249

9564

316

8

9S79

140194

14050S

140822

141136

141450 141763

142076

142369

14270:<;

314

9

143015

3327

3639

3951

4263

4574

4885

5196

5507

5818

311

140

14612S

14643S

146743

147058

147.367

147676

147985

148294

148603

148911

309

1

9219

9527

9835

150142

150149

150756

151063

151:370

151676

151952

307

2

1522SS

152594

1529(10

3205

3510

.3315

4120

4424

4728

5032

305

3

5336

.56411

5943

, 6246

6549

6352

7154

7457

7759

6061

303

4

8362

86f54

8965

9266

9567

936-^

160163

100469

160769

16106S

301

5

161 36S

161667

161967

1162266

162564

162363

3161

3460

37.58

4055

299

6

4353

4650

4947

: 5244

5.541

5833

61:34

6430

6726

7022

297

7

7317

7613

790s

i 8203

8497

8792

9086

9360

9674

9968

295

8

170262

170555

170848

171141

171434

171726

172019

172311

172603

172895

293

9

3186

3478

3769

4060

4351

4641

4932

5222

5512

5802

291

150

176091

1763^1

176670

176959

177248

177536

r7325

178113

178401

178689

289

1

8977

926 1

9552 9839

,180126

180413

180699

180986

181272

181558

287

2

181 844

182129

182415 18270!)

2985

3270

3555

3f339

4123

4407

285

3

4691

4975

.5259 5.542

5S25

6108

6.391

6674

6956

7239

283

4

7521

7S03

8n84 8366

8R47

8928

9209

9490

9771

190051

231

5

190332! 19061 2

190-^92 191171

191451

1917.30

192010

192289

192567

2S46

279

6

3125 3403

3681 3959

4237

4514

4792

5069

.5346

5623

278

7

5900 6176

6453 6729

7005

7231

7556

7832

8107

8382

276

8

8657' 8932

9206 94SI

9755

200029

200303

200577

200850

201124

274

9

{NO.

201397 0

201670

201943

20*22 16 I 3

; 2024 38

2761

3033

3305

3577

3848

272 Diff.

1

a

I *

5

6

7

8

9

TABLE XII. LOGAPJTHMS OF NUMBERS.

[j1

No.! O

1

2 3

GS26 9515

2I21S3

7434 22a 1 OS 2716 5309

7SS7

3

170

11

2;

3 4! 5 6 7 S 9

230149

299G 5o-23 8016

210ol9 30:}S 5513 7073

25012 » 2353

204391 7096' 9783

212154 5109 7747

220370' 2976| 5563 S144

230701 3250

130,

i!

2 3

4

5'

S\

7

8

9

255273 7679

260:J7l 2451 4313 7172 9513

271312 4153 6162

5731 3297

210799 3236 5759 R219

250661 3J96

2.)1663 7365

210)51 2720, 5373 1

soio;

220631: 32361 5326' 8409

230959 3501 6033

8543

241043

3531

6096

8461

250903

3333

2019311 7631

210319 2936 5633 8273

220392 3196 60311 8657

231215

3757 6235 8799

241^297 3782 6252 8709

251151 3530

205204 7901

210536 3252 5902 8536

221153 3755 6312 8913

20547 3173

210353 3513 6166 8793

221414 4015

66o;)

9170

8

205746 84411

211121' 3783 6130 9060

221675 4274 6858 9426

190 278754 1231033 2! 3301

7802 290035 2256 4466 6665 8353

255514 7913

260310 2633 5051 7406 9746

272074 4339 6692

278932 231261 3527 5782 8026 290257 2473 4637 6334 9071

2J0/0-J

8153 260513 2925 5290 7611 9930 272303 4620 6921

255996

8393 260787 3162 5525 7875 '270213 2533 4350 7151

231470 4011 6537 9049

211516 4030 6199 8951

25139 3322

256237

8637 261025 3399 5761 8110 270116 2770 5031 7330

^00 301030

3196 5351 7496 9639 311751 3367 5970 8)63

9,320146

210

322219

30124 3112 5566 7710 9343

311966 4073 6130 8272

320354

322426

1

4232

4433

2

6336

6541

3

8330

8533

4

330114

330617

5

2433

2640

6

4451

4655

7

6160

665)

8

8456 8656

9

310144 310612

No.

0

1

27921 1 231433 3753 6007 8219 290430 2699! 4907' 7104 9239

301464 3623 5781 7924

310056 2177 4259 6390 8131

32J562

322633

4691 6745 8787

330319 2312 4356 6360 8355

310311

3

231721 4261 6739 9299

241795 4277 6745 9193

251633 4064

256177 8877

261263 3636 5996 8344

270679 3001

279439

231715

3979

6232

8473

290702

; 2920

I 5127

7323

9507

279667 231942 4205 6456 8696 290925 3141 5347 7542 9725

5311 . 7609

279395 232169 4431 6631 8920 291147 3363 5567 7761 9943

231979 4517 7041 9550

242044 4525 6991 9443

251881 4306

256718 9116

261501 3373 6232 8578

270912 3233 554?

206016 8710

211333 4049 6691 9323

221936 4533 7115 9632

232234

4770 7292 9300

242293 4772 7237 9637

252125 4543

9

206236 8979!

211651 4314 6957 9535

222196 4792 7372 9933

Diff.

206556 9247

211921 4579 7221 9346

222456 5051 7630

230193

301631 301893 3344 4059 599Gi 6211 8 137 1 8351

3102631310431

256953 9355

261739 4109 6467 8812

271144 .3464 5772 8067

232488 5023 7541-

240050 2541 5019 7432 9932

252363 4790

257193 9591

261976 4346 6702 9046

271377 3696 6002 8296

230123 2396 4656 6905 9143

291369 3584 5787 7979

232742 5276

7795 240300 2790 5266 77231 250176 2610 5031

257439 9333

262214 4532 6937 9279

271609 3927 6232 8525

2339 4499 6599 8639 320769

322339 4399 6950 8991

.331022 .3011 5057 7060 9054

311039

2609 4710 6309 8393 320977

323046 5105 7155 9194

331225 3216

302114

4275 6425 8561

310693 2312 4920 7018 9106

321181

300161

302331 4491 6639 8778

310906 3023 5130 7227 9314

321391

230351 2622 4332 71.30 9366

29159! 3301 6007 8193

300373

302517 4706 6351 899

311113 3231 5340 7436 9522

321593

271

269 267 266 261 262 261 259 253 256

255 253 252 250 219 248 246 245 243 242

241 239 233 237 235 234 233 2.32 23C 229

5257

7260

9253

311237

323252 5310 7359 9393

.331427 3447 5458 7459 9451

3414.35

323453 5516 7563 9601

331630 3619 5653 7659 96.50

341632

230573 2349 5107 7354 9539

291813 4025 6226 8416

300595

302764 4921 7063 9204

311330 3445 5551 7616 973n

32130."

280806 3075 5332 7578 9812

292031 4246 6446 8635

300313

302930

5136

7232 9417

311542 3656 5760 7854 9933

.322012

323665 5721 7767 9305

331S32 3350 5859 7853 9349

341330

323371 5926 7972

330003 2034 4051 6059 8053

340047 2023

8

324077 6131 8176

3.30211 2236 4253 6260 8257

340246 2225

9

228 227 226 225 223 222 221 220 219 218

21i

216

215

213

212

211

210

209

203

207

206 205 204 203 202 202 201 200 199

otff.ji

158

TABLE XII. LOGARITHMS OF NUMBERS.

No.

220

0

1 342620

3 342317

3 I

4:

343212

5

6

7 343302

8

343999

9

Diff.

31^423

343014

343409

343606

344196

197

1

4392

4539

4785

4981

6178

5374

5570

5766

5S62

6157

196

2

6353

6549

6744

6939

7135

7330

7525

7720

7915

8110

195

3

8305

8500

8694

8889

9083

9278

9472

9666

9360

350054

194

4

350248

350442

350636

350829

351023

351216

351410

351603

351796

1939

193

5

2183

2375

2563

2761

2954

3147

3339

3532

3724

3916

193

6

4103

4301

4493

4635

4876

5063

5260

5452

6643

5834

192

7

6026

6217

64G3

6599

6790

6931

7172

7363

7554

7744

191

8

7935

8125

8316

8506)

8696

8336

9076

9266

9456

9646

190

9

9835

360025

360215

360404

360593

360783

360972

361161

361350

361539

1S9

230

361723

361917

362105

362294

362482

362671

362859

363048

363236

363424

188

1

3612

3S00

3933

4176

4363

4551

4739

4926

6113

5301

138

2

5483

5675

5862

6049

6236

6423

6610

6796

6983

7169

187

3

7356

7542

7729

7915

8101

8287

8473

8659

8845

9030

186

4

9216

9401

95S7

9772

9953

370143

370328

370513

370698

370383

185

5

371063

371253

371437

371622

371806

1991

2175

2360

2544

2728

184

6

2912

3096

3230

3464

3647

3831

4015

4198

4382

4565

184

7

4748

4932

5115

5298

5481

5664

5846

6029

6212

6394

133

8

6577

6759

6942

7124

7306

7438

7670

7852

8034

8216

132

9

8398

8580

8761

8943

9124

9306

9487

9668

9849

380030

181

240

380211

330392

330573

380754

330934

331115

331296

331476

381656

381837

181

1

2017

2197

2377

2557

2737

2917

3097

3277

3456

3636

ISO

2

3315

3995

4174

4353

4533

4712

4391

5070

5249

5423

179

3

5606

5735

5964

6142

6321

6499

6677

6356

7034

7212

178

4

7390

7563

7746

7923

8101

8279

8456

S634

8811

8989

178

5

9166

9343

9520

9693

9875

390051

390226

390405

390532

390759

177

6

390935

391112

391288

391464

391641

1317

1993

2169

2345

2521

176

7

2697

2873

3048

3224

3400

3575

3751

3926

4101

4277

176

8

4452

4627

4802

4977

5152

5326

5501

5676

5850

6025

175

9

6199

6374

6543

6722

6896

7071

7245

7419

7592

7766

174

250

397940

398114

398237

398461

393634

398808

393981

399154

399323

399501

173

1

9674

9347

400020

400192

400365

400533

40071 1

400383

401056

401228

173

2

401401

401573

1745

1917

2039

2261

2433

2605

2777

2949

172

3

3121

3292

3464

3635

3307

3978

4149

4320

4492

4663

171

4

4S34

5005

5176

5346

5517

6688

6858

6029

6199

6370

171

5

6540

6710

6381

7051

7221

7391

7561

7731

7901

8070

170

6

8240

8410

8579

8749

8918

9037

9257

9426

9595

9764

169

7

9933

410102

410271

410440

410609

410777

410946

411114

411283

411451

169

8

411620

1738

1956

2124

2293

2461

2629

2796

2964

3132

163

9

3300

3467

3635

3S03

3970

4137

4305

4472

4639

4806

167

260

414973

415140

415307

415474

415641

415808

415974

416141

416308

416474

167

1

6641

6307

6973

7139

7306

7472

7638

7804

7970

8135

166

2

8301

8467

8633

8798

8964

9129

9295

9460

9625

9791

165

3

9956

420121

420236

420451

420616

420781

420945

421110

421275

421439

165

4

421604

1763

1933

2097

2261

2426

2590

2754

2918

30S2

164

5

3246

3410

3574

3737

3901

4065

4228

4392

4555

4718

164

6

4332

5045

5203

5371

5534

5697

5860

6023

61S6

6349

163

7

6511

6674

6336

6999

7161

7324

7486

7648

7311

7973

162

8

8135

8297

8459

8621

8783

8944

9106

9268

9429

9591

162

9

9752

9914

430075

430236

430398

430559

430720

430881

431042

431203

161

270

431364

431525

431635

431846

432007

432167

432328

4324S8

432649

432809

161

1

2969

3130

3290

3450

3610

3770

3930

4090

4249

4409

160

2

4569

4729

4888

50-18

5207

5367

5526

5635

5844

6004

159

3

6163

6322

6481

6640

6799

6957

7116

7275

7433

7592

159

4

7751

7909

8067

8226

83S4

8542

8701

8359

9017

9175

153

5

9333

9491

9643

9806

9964

440122

440279

440437

440594

440752

158

6

440909

441066

441224

441381

441533

1695

1352

2009

2166

2323

157

7

2480

2637

2793

2950

3106

3263

3419

3576

3732

3889

157

8

4045

4201

4357

4513

4669

4825

4981

5137

5293

5449

156

9 No.

5694

5760

5915

6071 3

6226

6382 5

6537 6

6692

6348

7003

155

0

1

3

4:

7

8

9

Diff.

-^1

TABLE XII. LOGARITHMS OF NUMBERS.

159

No 0

1 2 3

4

290 1 2 3 4 5

447153 87061

450219 17S6 331S 4S15 6366 78S2 9392

46JS'JS

46239S 3393 53 S3 6S63 S347 , 9322 6 471292

a

2756 4216 5671

447313

8S61 450403 1940 3171 4997 651S 8033 9543 46104

462543 4042 5532 7016 8495 9969

47143S 2903 4362 5816

447463 90151

450557 2093 3624 5150 6670 8l8i 9694

461198

447623 9170

450711 2247 1 3777| 5302 0S21 8336 «S45

461348

:447778 1 9324 1450365 2100 I 3930

.300,477121 1 8566 2430007

462697 4191 5630 7164 8643

470116 1535 3019 450S 5962

3 4 5 6

7 8 9

310 1 2 3

4 5

6

7 8 9

320

1|

3

^1

6

7 8 9

462847 4340 5329 7312 8790

470263 1732 3195 4653 6107

5454 6973 6437 9995 461499

462997 4490 5977 7460 8933

470410 187S 3341 4799 6252

8

443242 9787

451326 2859 4387 5910 7428 8940

460447 1943

1413 2S74 4300 5721 7133 8551 9953

491362 2760 4155 5541 6930 831 95S7

501059 2127 3791

477266 871!

480151 15S6 3016 4142 5363 7230 8692

77411

4

«3oo

450294 1729 3159 4535 6005 7421 8333

463146 4639 6126 7603 9035

470557 2025 3437 4944 6397

490099 490239

491502 2900 4294 5633 7063 8443 . 9324 1501196; 2564 3927

477555 8999

430433 1872 3302 4727 6147 7583 8974

490330

477700 9143

430582 2016 3445 4369 6289 7704 9114

490520

491612 3040 4433 5322 7206 8586 9962

501333 2700 4063

505150 6505 785i 9203 510515 i 1833 3218 4513 5874 7196

463296 4783 6274 7756 9233

470704 2171 3633 5090 6542

463445 4936 6423! 7904 9330

470351 2318 3779 5235 6637

448397 9941

4-31479 3012 4540 6062 7579 9091

460597 2093

463594

448552 450095 1633 3165 4692 6214 7731 9242 460743 2248

463744

491782 3179] 4572 5960 7344 8724

500099 1470 2837 4199

491922

477844 9287

480725 2159 3587 5011 6430 784; 9255

490661

492062

3319 4711 6099 7483 8362 500236 1500374 1744

3453

4350 6233 7621 8999

505236 6640 7991 9337

510679 20171 3351 46S1 6006 7323

330 1

2 3 4 5 6

T I

8 9

51S514

9323 521133 2444 3746 5045 6339 7630 3917 V30200

518646 9959

521269 2575 3376 5174 6469 7759 9045

505421 6776 8126 9471

510313 2151 3434 4313 6139 7460

518777

520090

1400

2705

4006

505557 6911 8260 9606

510947 2234 3617 4946 6271 7592

1607 2973 4335

505693 7046 8395 9740

511031 2418 3750 5079 6403 7724

No. O

5304 6593 7888 9174 530456

3

520221 1530 2335 4136 5434 6727 8016 9302

530534

519040 520353

3109 4471

505823 7181 8530 9374

511215 2551 3333 5211 6535 7855

519171 520434

477939 9431

430369 2302 3730 5153 6572 7986 9396

490801

192201 3597 4939 6376 7759 9137

590511 1830 3246 4607

478133 9575!

481012 2445 3872 5295 6714 8127 9537

490941

5035 6571 8052 9527 470993 2464 3925 5331 6332

478278 9719

481156 2588 4015

b3Jij

8269

9677

491031

5234 6719 8200 9675 471145 2610 4071 5526 6970

478422 9363

481299 2731 4157 5579 6997 8410 9318

491222

492341 3737 5128 6515

7397 9275 500643 2017 3332 4743

492481 3376 5267 6653 8035 9412

5007S5 2154 3518 4878

505964 7316 8664

510009 1349 2684 4016 5344 6663 7937

492621

4015 540e 6791 8173 9550 500922 2291 3655 5014

u06099 7451 8799

U10143 1482 2318 4149 5476 6300 8119

Diff. '

155 154 154 153 153 152 152 151 151 150

150 149 149 148 148 147 146 146 146 14;'

!45 144 144 143 143 142 142 141 141 140

140 139

139

1391

1381

I33i

1371

137

136

136

506234 7536 8934

510277 1616 2951 4282 5609 6932 8251

1661

1792

2966

3096

4266

4396

5563

5693

6356

6935

8145

8274

9130

9559

530712

530340

519303 520615 1922 3226 4526 5822 7114 8402 9637 530963

6

520745 2053 3356 4656 .5951 7243 8531 9815

531096

519566 520376 2183 3486 4785 6031 7372 8660 9943 531223

8

506370 7721 9063

510411 1750 3034 4415 5741 7064 8382

519697 521007 2314 3616 4915 6210 7501 8788 530072 135

136 135 135 134 134 133 133 133 132 132

13!

131 131 130 130 129 129 129 128 128

Diff.i

IbU

TABLE XII. LOGARITHMS OF

.NUMBERS.

No.

340

0

531479

1 531607

a

3

531862

4:

531990

5

6

7 532372

8

9

Diff.

123

531734

532117

532245

53250D

532627

1

2754

2332

3009

3136

3264

3391

3518

3645

3772

3S99

127

2

4026

4153

4230

4407

4634

4661

4787

4914

5041

5167

127

3

5294

5421

5547

5674

5800

5927

6053

6180

6306

6432

126

4

6558

6635

6311

6937

7063

7139

7315

7441

7567

7693

126

5

7819

7945

8071

8197

8322

8443

8574

8699

8325

8951

126

6

9076

9202

9327

9452

9578

9703

9829

9954

540079

540204

125

7

540329

540455

540530

r40705 540330 1

540955

541030

541205

1330

1454

125

8

1579

1704

1829

1953

2078

2203

2327

2452

2576

2701

125

9

2S25

2950

3074

3199

3323

3447

3571

3696

3820

3944

124

350

544063

544192

544316

544440

544564

544635

544812

544936

545060

545183

124

1

5307

5431

5555

5673

5302

5925

6049

6172

6296

6419

124

2

6543

6666

67S9

6913

7030

7159

7282

7405

7529

7652

123

3

7775

7898

8021

8144

8267

8389

8512

8635

8758

6881

123

4

9003

9126

9249

9371

9494

9616

9739

9S61

9934

550106

123

5

550223

550351

550473

550595

550717

550840

550S62

551034

551206

1328

122

6

1450

1572

1694

1316

1938

2060

2181

2303

2425

2547

122

7

2663

2790'

2911

3033

3155

3276

3398

3519

3640

3762

r^i

8

3383

4004

4126

4247

4368

4439

4610

4731

4852

4973

121

9

5094

5215

5336

5457

5578

6699

5820

5940

6061

6182

121

360

556303

556423

556544

556664

5567S5

556905

557026

557146

557267

5573S7

120

A

7507

7627

774«

7868

7988

8108

8228

8349

8469

8689

120

2

8709

8S29

S94S

9063

9188

9308

9423

9548

S667

9787

120

3

9907

560026

560146

560265

560385

560504

560624

560743

560363

560982

119

4

561101

1221

1340

1459

1573

1693

1817

1936

2055

2174

119 j

5

2293

2412

2531

2650

2769

2837

3006

3125

3244

3362

119

6

3431

3600

3718

3337

3955

4074

4192

4311

4429

4548

119

7

4666

4734

4903

5021

5139

5257

5376

5494

6612

5730

lis

8

5348

5966

6034

6202

6320

6437

6555

6673

6791

6S09

118

9

7026

7144

7262

7379

.7497

7614

7732

7849

7967

8084

lis

370

563202

568319

563436

568554

563671

568788

568905

569023

569140

569257

117

1

9374

9491

960*

9725

9342

9959

570076

570193

570309

570426

117

2

570543

570660

570776

570393

571010

571126

1243

1359

1476

1592

117

3

1709

1325

1942

2058

2174

2291

2407

2523

2639

2755

116

4

2S72

29.-;8

3104

3220

3336

3452

3563

3684

3800

3915

116

5

4031

4147

4263

4379

4494

4610

4726

4841

4957

5072

116

6

5183

5303

5419

5534

5650

5765

5880

5996

6111

6226

115

7

6341

6457

6572

6637

6302

6917

7032

7147

7262

7377

115

8

7492

7607

7722

7836

7951

8066

8181

8295

£410

8525

115

9

8639

8754

8868

8983

9097

9212

9326

9441

9555

9669

114

380

579784

579398

580012

580126

580241

580355

580469

580583

580697

580811

114

]

580925

581039

1153

1267

1381

1495

1608

1722

1836

19£0

114

2

206:i

2177

2291

2404

2518

2631

2745

2858

2972

3085

114

3

3199

3312

3426

3539

3652

3765

3879

39921 4105

4218

113

4

4331

4444

4557

4670

4783

4396

5009

51221 5235

5348

113

5

5461

5574

5636

5799

5912

6024

6137

6250

6362

6475

113

6

6537

6700

6312

6925

7037

7149

7262

7374

7486

7599

112

7

7711

7823

7935

8047

8160

8272

8334

8496

8608

8720

112

S

8332

8944

9056

9167

9279

9391

9503

9615

9726

9838

U2

9

9950

590061

590173

590284 590396

590507

590619

590730 590342

590953

112

390

591065

591176

5912S7

591399 591510

591621

591732

591.843 591955

592066

111

1

2177

2238

2399

2510

; 2621

2732

2343

2954; 3064

3175

111

2

3236

3397

3503

3613

: 3729

3340

3950

4(:6i: 4171

4232

111

3

4393

4503

4614

4724

4834

4945

5055

51651 6276

5336

110

4

5496

5606

5717

5827

5937

6047

6157

6267

6377

6487

110

5

6597

6707

6317

6927

1 7037

7146

7256

7366

7476

7586

i 110

6

7695

7805

7914

8024

8134

8243

8353

8462

8572

8631

1 no 1

7

8791

8900

9009

9119 9223

9337

9446

9566

9665

9774' 1091

8

9333

9992

600101

600210 600319

,600423 600537

600646 600755 eO0.-;64 liiy||

No

600972

601082

1191

1299 1403

1517 5

1625 6

1734 7

1843; 1951

109

0

I 1

a

3

4:

8 1 9

Diff

TABLE Xll. LOGAItlTHMS OF NUMBEUS.

161

I No.' !4U0

1

2

3

4

5

6,

7i

0^1 1

6lv2()6U 602169 3M4

4226

53):')

6331 7455

8526 9194

3253 4334 54)3 6439 7562 6633 9701

S 610660 610767

a

9

410 I 2 3

4

1723

6127S4 3342 4897 5950 7000 8043 9093

620136 1176 2214

420 623249

4232 5312 6340 7366 8339 6j 9410

7 63 )ia»5

8 1444 2157

1629

612390 3947 5003 6055 7105 8153 9193

620240 1230 2313

623353 4335 5115 6443 7463 8491 9512

63053:) 1515 2559

602277 3361 4442 5521 6596 7669 8740 9803

610373 1936

602336 3469 4550 5623 6704 7777 8347 9914

610979 2012

612996 4053 5103 6160 7210 8257 9302

620344 1334 2421

623456

4438 5518 6516 7571 8593 9613

613102 4159 5213 6265 7315 8362 9406

62()443 1433 2525

602494 3577

4658 5736 6311 7834 8954 610021 1036 2143

613207 4264 5319 6370 7420 8466 9511

620552 1592 2623

5

602603 3636 4766 5344 6919 7991 9061

610123 1192 2254

613313

4370 5424 6476 7525 8571 9615 620656 1695 2732

6

602711 3794 4374 5951 7026 8093 9167

610234 1296

2360

«

613419 4475

623559 623663

430 633463

1 4477

5434 6438 7490 8439 9436 7613131 8i 1474 9 I 2455

440 613453

4591 5621 6643 7673 8695 9715 630631 630733 1647 1743

II 2i

4i

5i 61

4439 5422 6104 7353 8360 9335

633569

4578 5534 6533 7590 8539 9536 640531 1573 2563

643551 4537 5521 6502 7431 8453 9432

2660

633670 4679

8

602319 602926 4010 50^9 6166 7241 8312 9331 610447 1511 257-2

9 Diffi

7 65030S 650405

8 9

450 1 2 3 4 5 6 7

1375 2343

1276 2246

653213

4177

5133

6093

7056.

8011

8965

9916 660111 660365 0960

1813 1907

5635 6633 7690 8639 9636 64003) 1672 2662

643650 4636 5619 6600 7579 8555 9530

650502 1472 2440

2761

633771 4779

5735 6789 7790 8739 978^ 610779 1771 2761

643749 4731 5717 6693 767^ 8653 9627

650599 1569 2536

4695 5724 675 7775 8797 9317 630335 1849 2362

633372 4330

5529 6581 7629 8670 9719 620760 1799 2835

3902 4982 6059 7133 8205 9274 610341! 1405 2466

613525 4531 5634 6636 7734 8780' 9324

620364 1903 2939

5336 6339 7390 8333 9335 640379 1871 2360

623766 4793 5

6853 7373 8900 9919

630936 1951 2963

633973 4931 5936 6939 7990 8933 9934

640978 1970 2959

603036

108

4116

103

5197

103

6274

103

7313

107

8419

107

9438

1(17

610551

107

1617

106

2676

106

613630 463G 5740 6790 7839 8834 9923

62096- 201)7 3042

623869 4901 5929 6956 7930 9002

630021 1033 2052 3061

634074 5031 6037 7089 8090 9038

640034 1077 2069 3053

623973 621076 5107 6135 7161 8185 9206 630224 1241 2255 3266

653309 4273 5235 6194

7152 8107 9060

653405

4369 5331 6290 7217 8202 9155 660106 1055 2002

613847 4332 53 1 5 6796 7774 8750 9724

650696 1666 2633

643946 4931 5913 6894

7672 8343 9321 650793 1762

Na O

653502 4465 5127 6336 7313 8293 9250

660201 1150 2096

53593 4562 5523 6482 7433 8393 9346 66029G 1245 2191

653695 4653 5619 6577 7534 8133 9441

660391 1339 2236

5

644044 5029 6011 6992 7969 8945 9919

650390 1859 2326

653791 4754 5715 6673 7629 8534 9536

660436 1434 2330

6032 7053 8032 9104 630123 1139 2153 3165

63417;:> 5132 6137 7189 8190 9183

640183 1177 2163 3156

644143 5127 6110 7039 8067 9043

650016 0937 1956 2923

613736

4792 534." 6395

794;;

8989 620032 1072 2110 3146

624179 5210 6233 726:j 82S7 9306

630:326 1342 2356 3367

634276 5233 6237 7290 8290 9237

640233 1276 2267 3255

644242

108

106

105

105

105

105

104

104 I

1041

104

103

103 103 103 102 102 102 102 101 101

634376 533: 6333 7390 83^9 9337

540332 1375 2366 3354

644340

653S83 4350: 5310 6769 7725 8679 9631

660531 1529 2475

6

5226 6208 7137 816:)' 9140 650113 1081 2053 3019

653934 4946 5906 6364 7820 8774 9726

660676 1623 2569

8

6306. 7235 8262 923 6.50210 1161 2150 3116

6540^0 5042 6002 6960 7916 8870 9321

660771 1713 2663

101

101

100

100

100

100

99

99

99

99

93 93 93 93 98 97 97 97 97 97

96 96 96 96 96 95 95 95 95 9^.

9 iCiff.

Ib):^

TABLE XII. LOGARITHMS

> OF

NUMBERS.

No.

460

0 1

662753

1 1 662S52

3

3

■* 1 663135

5 6 7 \ 663230 663324 663418

8 1

9

5636071

Di£L )

94

662947

563041

663512

1

3701

3795

3339

3983

^078

4172 42661

4360

4454

4543

94

2

4642

4736

4330 4924

5018

5112

5206

5299

5393

6487

&4i

3

5581

5675

5769 5862

5956

6050

6143

6237

6331

6424

94

4'

6518

6612!

6705 6799

6392

6986

7079

7173

7266

7360

94

5

7453

7546

7640

7733

7S26

7920

8013

8106

8199

8293

93

6

83S6

8479

8572

8665

S759

8852

8945

9033

9131

9224

93

7

9317

9410

9:503

9r:96

9639

9782

9875

9967;

670060

670153

93

8

670246

670339

670431 '670524

670617

670710.670302 670895

0938

1030

93

9

1173

1265

1353

1451

1543

1636 1723 1821

1913

2005

93

470

672098

672190

6722S3

672375

672467

672560 672652 672744

672836

672929

92

1

3021

3113

3205

3297

3390

3432

3574

3666

3758

3850

92

2

3942

4034

4126

4218

4310

4402

4494

45S6

4677

4J69

92

3

4361

4953

5045

5137

5223

5320

5412

6503

5595

6637

92

p

4

577S

5370

5962

6053

6145

6236

6323

6419

6511

6602

.92^

5

6694

6785

6576

6968

7059

7151

7242

7333

7424

7516

91

6

7607

7698

7789

7381

7972

8063

8154

8245

8336

8427

91

7

8518

8609

8700

8791

8832

8973

9064

9155

9246

9337

91

8

9423

9519

9610

9700

9791

9532

9973

680063,

630154

630245

91

9

630336

630426

630517 630607

680693

630789

680879

0970

1060

1151

91

' 480

681241

631332

681422

681513

681603

681693

681784

681874

631964

682055

90

! 1

2145

22:35

2326

2416

2506

2596

2636

2777

2567

2957

90

1

i 2

3047

3137

3227

3317

3107

3197

3587

3677

3767

3857

90

1

! 3

3947

4037

4127

4217

4307

4396

44.36

4576

4666

4756

90

4

4345

4935

5025

5114

5204

5294

5383

5473

5563

5652

90

5

5742

5331

5921

6010

6100

6189

6279

6368

6458

6547

89

6

6636

6726

6315

69(M

69M

7083

7172

7261

7351

7440

89

7

7529

7618

7707

7796

7836

7975

8064

8153

8242

8331

89

8

8420

S509

8593

8637

8776

8865

8953

9042

9131

9220

89

9

9309

9393

9436

9575

9664

9753

9841

9930

650019

690107

89

490

690196

690235

690373

690462

690550

690639 '690723

690318

690905

690993

89

1

1031

1170

12.53

IM7

1 1435

1524 1612

1700

1789

1877

88

2

1965

2053

2142

2230

2313

2406 2494

2533

2671

2759

•68

3

2347

2935

3023

3111

3199

3237

a375

3463

3551

3639

88

4

3727

3315

3903

3991

1 4078

4166

42^

4342

4430

4517

88

5

4605

4693

4731

4363

4956

5044

5131

5219

5307

5394

88

6

5432

5569

5657

5744

5332

5919

6007

6094

6162

6269

87

7

6356

6444

6531

6618

: 6706

6793

63.30

6963

7055

7142

87

8

7229

7317

7404

7491

^ 7578

7665

7752

7839

7926

8014

87

9

8101

8183

8275

8362

8449

1

8535 8622

8709

8796

8883

87

500

693970

699057

699144

699231 699317

699404 699491

699578

699664

699751

87

j ]

9333

9924

700011

700093 700134

700271 !700353;70O444

700531

700617

87

2

700704

700790

0377

0963 1050

1136

1222

1309

1395

1432

86

1 3

1563

1654

1741

1827 1913

1999

2036

2172

2253

2ai4

86

4

2431

2517

2603

2639 2775

2361

2947

30a3

3119

3205

86

5

3291

3377

3463

3;549 3635

3721

3507

3393

3979

4065

86

6

4151

4236

4322

4403 4494

45791 4665

4751

4337

4922

86

7

5003

5094

5179

5265 5350

5436 i 5522

5607

6693

1 5778

86

8

5864

5949

6035

6120 6206

6291

6376

6462

6547

6632

85

9

6718

6303

6338

6974 7059

1

7144

7229

7315

7400

7485

85

510

707570

707655

707740

707826 707911

707996

703031

703166

703251

703336

85

1

8421

8506

8591

S676 8761

8846! 8931

9015

9100

9185

85

2

9270

9355

9440

9524 9609

9694! 9779

9863

9943

710033

85

3

710117

710202

7102S7

710371 710456

710540 710625

710710 710794

0379

85

4

0963

1043

1132

1217 1301

1335; 1470

1554

1639

1723

84

5

1807

1892

1976

2060 2144

2229; 2313

2397

2481

2566

84

6

2650

2734

2313

2902 2936

3070 3154

3238

3323

3107

84

7

3491

3575

3659

3742 3326

39IOI 3994

4078

, 4162

4246

84

8

4330

4414

4497

4531 4665

4749 4333

4916

500C

5084

84

S 1 So

5167

5251

5335

5418 5502

5536 5669

5753

5336

592G

! 84

0

1 1

3

3

4

5

i 6

7

18 19

Diff.

1

TiiBLE XII.

LOGARITHMS OF NUMBERS.

163

No.|

0

i

3

3

4:

5 71G121

»

7

8

9

716754

Dili".

83

520 716003

716037

716170 716254

716337

7165041716588 71 6671

1

6S3-i

6921

7004

7088

7171

7254

7338

74211 7504

7587

83 1

2

7671

7754

7837

7920

8003

8036

8169

8253 83:56

8419

831

3

S502

8585

8668

8751

8834

8917

9000

9083 9165

9248

831

4

93311 9414

9497 95S0

9663

9745

9828

991 1

9994

720077

83

5

72!)15y' 720242

720325 720407

720490

720573

720655

720733

720321

0J03

83

6

09c)ii| 106S

1151 1233

1316

1398

1481

1563

1646

1728

82

7

1811

1893

1975 2058

2140

2222

2305

2337

2469

2152

82

8 263t

2716

2798 2881

2963

3145

3127

3209

3291

3374

82

9 34.-)6

353-

362 1 3702

3784

3866

3948

4030

4112

4194

S2

530 724276

724358

724 MO 724522

721604

724685

724767

724849

724931

725013

8;g

1

5095

5176

5258 5310

5422

5503

5585

5667

5748

5830

82'

2

5912

5993

6075' 6156

6233

6320

6101

6483

6564

6646

S'>l

3

6727

6309

G390: 6972

7053

7134

7216

7297

7379

7460

811

4

7541

7o23

77041 7785

7866

7948

6029

8110

8191

8273

81 !

5

8354

8135

8516] 8597

8678

8759

8841

8922

9003

9084

81!

G

916>

9246

9327 9403

9489

9570

9651

9732

9813

9893

81

7

9974

730055

730136 730217

73029S

730378

730459

730.540

730621

730702

81

S

7307S2

03G3

09441 1024

1105

1186

1266

1347

1423

1508

81

9

1589

1669

1750 1830

1911

1991

2072

2152

2233

2313

81

5-10

732394

732-174

732555 732G35

732715

732796

732376

732956

733037

733117

80

1

3197

3278

3353 3138

3518

3598

3679

3759

3839

3919

80

2

3999

4079

41 go; 4240

4320

4400

4480

4560

4610

4720

80

3

4S0O

4S30

4960: 5010

5120

5200

5-^79

5359

5139

5519

80

4

5599

5679

5759; 5833

5918

5998

G078

6157

6237

6317

80

5

6397

(M76

6556 6635

6715

6795

6371

6954

7034

7113

80

6

7193

7272

7352; 7431

7511

7590

7G70

7749

7829

7908

79

7

79S7

8067

8146; 8225

8305

8384

8463

8543

8622

8701

79

8

8781

8860

8939 9'I18

9097

9177

9256

9335

9414

949:i

79

9

9572

9651

9731 9310

98S9

9968

740047

740126

740205

740284

79

550

7403G3

740412

7 10521 1740600

740678

740757

740336

740915

740994

741073

79

I

1152

1230

1309! i:388

- 1467

1546

1624

1703

1782

186'1

79

2

1939

20!S

2036 ; 2175

2254

2332

2411

2489

2568

2647

79

3

2725

2304

2iSi> 2961

3039

3118

3196

3275

3353

3431

78

4

3510

35-;:

3567: 3745

3323

3902

3980

4058

413G

4215

78

5

4293

4 3/-i

4 119 4528

4606

4684

476:^

4340

4919

4997

78

G

5075

5153

5231

5309

5337

5465

5543

5621

5699

5777

78

7

5855

5933

6011

6089

6167

6245

6323

6401

6479

6556

78

8

6634

6712

6790

6363

6945

7023

7101

7179

7256

7334

78

9

7412

7489

7567

7645

7722

7800

7878

7955

8033

8110

78

"GO

748183

74326G

743343 748421

748493

748576

748653

748731

748808

74388."

77

1

89G3

9;>10

9118

9195

9272

9350

9427

9501

9582

r;650

77

2

9736

9811

9391

9968

750045

750123

750200

750277

750354

750431

77

375050S

75058G

750663 750740

0817

0894

0971

1048

U25

12il2

77

4

1279

1356

1433 1510

1537

1661

1741

1818

1895

1972

77

5

2018

2125

2202 2279

2356

2433

2509

258G

2663

2740

77

G

2S1G

2^93

2970 3047

3123

3200

3277

3353

343')

3506

77

7

3583

3660

3736 3313

3339

3966

4042

4119

4 1 95

4272

77

8

4313

4125

4501

4578

4654

4730

4807

4383

496 I

5036

76

9

5112

5189

5265

5341

5417

5494

5570

5646

5722

5799

76

570

755375

755951

756027

756103

756180

756256

756332

756108

756484

756560

76

I

G^13G

6712

6788

6361

6940

7016

7092

7163

724 1

7320

76

2

7396

7472

7548

7624

7700

7775

7851

7927

80' tt

8079

76

3

8155

8230

8306

8332

8458

8533

8609

8685

8761

8836

76

4

3912

8938

9063; 9139

9214

9290

9366

9441

9517

9592

76

5

9863

9743

9819 9391

9970

760045

7G0I2I

760 1 96

760272

760347

75

fi

761122

760493

760573 760619

760724

0799

0375

095!)

1025

1101

75

7

1176: 1251

1326

1402

1477

1552

1627

1702

177^

1853

75

8 9

\:)-i^\ 2003

2078

2153

2223

2303

2373

2453

2529

2604

75

2679 0

, 2754

2329 3

29ai

2978

3053 5

3123 6

3203

7

3278 8

3353 9

75 Dlff.

Na

1

3

4

164

TABLE Xll. LOGARITIOIS OF NUMBERS.

No.i 530;

0

76.:«2S

1 j 763503

3

3 i * 1

5

6

763877

7 ,

8

» :

Diff.

75

763573 763653 763727

763302

763952

764027:7641011

1

4176

42511

43261 4400^ 4475

45501 4624

4699

4774

43481

75

2

4923 4993

5072 5147 5221

5296: 5370

5445

5520

5594

75

3

5669 5743

5318 5892 5966

6041 6115

6190

6264

6333]

74

4

6413 64S7

6562

6636 6710

6785 6359

6933

7007

70821

74

5

7156 7230

7304

7379, 7453

7527 7601

7675

7749

7823

74

6

789S; 7972

8046 8I20; 8194

8268

8342

8416

8490

8564

74

7

S63SI 8712

8766i 8860 8934

9008

9082

9156i

9230

.9303

74

8

9377; 9451!

9525 9599 9673

9746

9820

98941

9968

770fi42

74

9

770115

770189;

770263 770336 7704101

1 1

770484

770557

770631

770705

0778

74

590

770352

770926

770999

771073 771146

771220

771293

771367

771440

771514;

74

1

15S7

1661

1734

1803: 1331

1955

202.S

2102

2175:

2243'

73

2

2322

2395

2463

2542 2615

2688

2762

2835

2908 j

2981

73

3

3055

3123

3201

3274! 3348

3421

3494

3567

3640

3713

73

4

3786

3360

3933

40061 4079

4152

4225

4298

4371

4444

73

5

4517

4590

4663

4736! 4809

4882

4955

5028

5100

5173

73

6

5246

5319

5392

5465 5538

5610

5683

5756

5829

5902

73

7

5974

6047

6120

61931 6265

6338

&41I

6483

6556

6629

73!

8

6701

6774

6846

6919, 6992

7064

7137

7209

7282

7354

1-0

9

7427

7499

7572

7644' 7717

j

7789

7862

7934

.8006

8079

72

600

778151

773224

778296

778363 778441

778513

778585

778658

778730

778802

72

]

8374

8947

9019

9091 i 9163

9236

9303

9380

9452

9524

72

2

9596

9669

9741

9813' 9835

9957

730029

780101

780173

780245

72

3

780317 7S0aS9

730461

780533 780605

7S0677

0749

0821

0893

0965

72

4

1037; 1109. 1181

1253: 1324

1396

1468

1540

1612

1684

72

5

1755

1827

1899

1971 2042

2114

2186

2253

2329

2401

72

6

2473

2544

2616

2688, 2759

2831

2902

2974

3046

3117

72

7

3139

3260

3332

3403 3175

3546

3618

3689

3761

3832

71

' 8

3904

3975

4046

4113 4189

4261

4332

4403

4475

4546

71

9

4617

4639

4760

4331 4902

4974

5045

5116

5187

5259

71

610

735330

735401

785472

785543 785615

785686

785757

785828

785899

785970

71

1

6041

6112

6183

62^54 6325

6396

6467

6533

6609

6630

71

2

6751

6322

6393

6964 7035

7106

7177

7248

7319

7390

71

3

7460

7531

7602

7673 7744

7815

7885

7956

8027

8098

71

4

8168

8239

8310

83S1 8451

8522

8593

8663

8734

8804

71

5

SS75

8946

9016

9087 9157

9228

9299

9369

9440

9510

71

6

9581

9651

9722

9792 9363

9933

790004

790074

790144

790215

70

7

790235

790356

790426

790496 790567

790637

0707

0778

0848

0918

70

8

09SS

1059

1129

1199 1269

laio

1410

1480

1550

1620

70

9

1691

1761

1831

1901 1971

2041

2111

2181

2252

2322

70

620

792392

792462

792532

792602 792672

792742

792812

792^82

792952

793022

70

1

3092

3162

3231

330 r 3371

3441

3511

3531

3651

3721

70

2

3790

3860

39:30

4000 4070

4139

4209

4279

4349

4413

70

3

4483

455S

4627

4697 4767

4836

4906

4976

5045

5115

70

4

5185

5254

5324

5393 5463

5532

5602

5672

5741

5811

70

5

5830

5949

6019

6038 6158

6227

6297

6366

6436

6505

69

6

6574

6644

6713

6732 6352

6921

6990

7060

7129

7198

69

7

7268

7337

7406

7475 7545

7614

7683

7752

7821

73S0

69

8

7960

8029

8093

8167 8236

8305

8374

8443

8513

8582

69

9

8651

8720

8789

8858 8927

8996

9065

9134

9203

9272

69

630

799341

799409

799478

799547 799616

799685

799754

799823

799892

799661

69

1

3U0029

30009-

3001671300236 800305

800373 1800442

800511

800530

800643

69

2

0717

0786

0354

0923 0992

1061

1129

1198

1266

1335' 69

3

1404

1472

1541

1609 1673

1747

1815

1834

1952

2021

69

4

2aS9

2153

2226

2295 2363

2432

2500

2563

2637

2705

03

5

2774

2842

2910

2979 3047

3116

3184

3252

3321

3389

CS

6

34571 3525

3594

3662 3730

3793

3S67

3935

: 4003

4071

68

7

4139

4203

4276

4344 4412

4430

4548

4616

4635

4753

68

c

432 1

4339

4957

5025 5093

5161

5229

5297

! 5365

5433

63

ft

5501

5569

1

5637

5705 5773

5841

5908

5976

6044

j

6112

1 68

Na

0

2

3 4

5

6

7

1 8

9

Diff.

TABLE Xll. LOGARITHMS OF NUMBERS.

165

No.

640 1

2 3

4 5 6 7 8 9

8061801806218

6S58 7535 8211 8SS6 9560 810233 0904 1575 2245

69 6 7603 8279 8953 9327 810300 0971 1612 2312

650312913

8 9

660 1 2 3 4 5 6 7

3581

424S

4913

5578

6241

6904

7565

8226

8885

800:316 6994' 7670 8346 9021 9694

810367 1039 1709 2379

812980 3648 4314 49S0 5644 6303 6970 7631 82:)2 8951

819544 820201 0358 1514 2163 2322 3474 4126 4776 5426

819610 320267 0924 1579 2233 23S7 3539 419! 4841 5491

806451 7129 7806 84SI 9156 9829

810501 1173 1843 2512

806519 7197 7873 8549 9223 9896

810569 1240 1910 2579

813114 3781 4447 5113

5777 6440 7102 7764

8424 9083

IG70 1 2 3 4 5 6

81 9676 320333 0989 1645 2299 2952 3605 4256 4906 5556

813181 3348 4514 5179 5843 6506 7169 7830 8490 9149

826075 6723 7369 8015 8660 9304 9947

830539 1230 1870

819741 829399 1055 1710 2364 3013 3670 4321 4971 5621

806655 7332 8008 8634 9358

810031 0703 1374 2044 2713

81324 3914 4531 5246 5910 6573 7235 7896 8556 9215

_^1 806723 7400 8076 8751 9425 810093 0770 144 211 2780

9 Diff

813314 3981 4647 5312 5976 6639 7301 7962 8622 9281

806790 7467 8143

8818 9492 810165 0837 1508 2178 2847

819807 820464 1120 1775 2430 3083 3735 43S6 5036 5636

813381

4048 4714 5373 6042 6705 7367 8028 8638 9346

819873 820530 1186 1841 2495 3148 3300 4451 5101 5751

813448 4114 4780 5445 6109 6771 7433 8094 8754 9412

826140 6787 7434 8030 8724 93681

330014 0653 1294 1934

826204 6352 7499 8144 8789 1 9132 330075 0717 1358 1998

6SC I

2 3 4 5 6 7 8 9

832509 3147 3734 4421 5056 5691 6324 6957 7533 8219

826269 6917 7563

8209 8853 9497 830139 0781 1422 2062

832573 3211 3343

4434 5120 5754 6337

7020 7652

8232

82G334 6931 7628 8273 8918 9561

830204 0845 1486 2126

832637 327." 3912 4548 5183 5317 6451 7033 77 Ir 8345

819939

820595 1251 1906 2560 3213 3865 4516 5166 5815

813514 4181 4347 5511 6175 6833 7499 8160 8320 9478

820004 0661 1317 1972 2626 3279 3930 4581 5231 5880

820070 0727 1332 2037 2691 3344' 3996 4646 5296 5945

826399 7046 7692 8333 8982 962

830263 0909 1550 2189

832700 3333 3975 4611 5247 5831 6514 7146 7773 8403

326464 7111 7757 8402 9046 9690

830332 0973 1614 2253

832764 3402 4039 4675 5310 5944 6577 7210 7841 8471

326528 7175 7821 8467 9111 9754

830396 1037 1678 2317

832323 3466 4103 4739 5373 6007 6641 7273 7904 8534

b90; 833849 1 1 9178 21840106

0733 1359 19S5 2609 3233 3355 4477

833912 9.; 41

840169 0796 1422 2047 2672 3295 3918 4539

ilwo. O

833975: 96041

840232 0359 1435 2110 2734 3357 3980 4691

3

83903S 9667

840294 0921 1547 2172 2796 3420 4042 4664

839101 9729

840357 0934 1610 2235 2859 3482 4104 4726

820136 0792 1448 2103 2756 3409 4061 4711 5361 6010

826593 7240 7886 8531 9175 9818

830460 1102 1742 2381

832892 3530 4166 4302 5437 6071 6704 7336 7967 8597

39164 9792 840420 1046 1672 2297 2921 3544 4166 4788

826658 7305 7951 8595 9239 9882

8305 1166 1806 2445

63

63 63 67 67 67 67 67 67 67

67 67 67 66 06 66 66 6G 66 66

66 €6 66 65 65 05 65 65 65 65

65 65 65 64 64 64 64 64 61 64

832956 3593 4230 4866 5500 6134 6767 7399 8030 8660

833020 3657 4294 4929 5564 619 6830 7462 8093 8723

839227 ^55

840482 1109 1735 2360 2983 3606 4229 4850

839239 9918

840545 1172 1797 2422 3046 3669 4291 4912

833083 3721 4357 4993 5627 6261 6394 7525 8156 8786

8

839352 839415

9931 840608

1234

1860

2484

3108

3731

4353

4974

166

TABLE XII. LOGARITHMS OF KX'3IBEBS.

Sa O

6

8

700 S450&S Sioien S45222 S452S4 S45:i46 ll 571 S 5rS<J 5>i2 5&W 59G6 63&? &i6l 6523 6565'

S454C«S 54547' ^-"'^2 S45594 S

6337 6955 7573| SI 59

7017,

7684

S251

S505; SS66

7tJ79 7141 7202

7696 775S 7519

8312* S374 S435

S92S S^9 9051

o-jo ci«wi fy;*

710^ri5S 351320 5513=1 =

1S70 1931 ■24S» ^5*1

3695

4306 4913! 55191

3l5Ci

3759 4367 4974 555»:» 6124' 61S5 6729 67S9

If- -

2& 4

3211 3S2.J 4425

5* - 56-. 6245 6S5'J

....":

3272 35-51

6910

6025 6646 7264 75i51 84£'7 9112

C-l-AJ

6fr

67l- 7326 7943

S559 9174

: 6213

^77u 6532

73SS 7449

8004 S066

8620 8682

9235 9297

F^9 9911

" - 55C«524

- -c 1136

S4?656 6275 6594 7511 81 2S 8743 9355 9972

55C555 1!&7,

DiftM

i

3333 3394 39411

6970

2236 2546 3455

2297

23r5

2965 3577

2419 3029 £6?7

;;-—:»

-o o =.^74.53!s57513'S57574 5»:66 -5116. 5176

71 15341 1594 1654 81 2131! 2191 5251 9 2725 2757. 2547 j

Ai'. :

- ■•-->

4124

4!n5

424

5

4-

'.1

473!

47i-2

jc;

0

.' , -

64^7 7t>3l

64 ■r7 7091

OO-IS

7152

66i«5 7212

C'

<^-

-

S57fi"-'

i-.-c:i.<

^r"* . . r>-*

..-.,.

c -",*;"

5..

-

^

I

iiiO 1176. r^j<j li ' . "

1714, 1773! 153:3 1^. - - ,

2310, 2370 2430 245v 254yi 26tK?

2906, 29661 3025; 3055; 3144, 3204

2665 3263

llr.

3

-:0 1 1

5104

516:3

5-^

52-2

4,

5755

o^ -

"■"*■'

D

6257

6346

64

6

6575

e9:r

&-

. .-

^

7i«~

"?^*>^

75 r

~

5174

5i3o

5762

S521

_ _:

,1 ;/^->:;p, Qfi'w^' =636=0 863739 563799' S63555 4274 4333 4392: 4452

-.:-.- ^-r 4567 4926 49S5J f'"-" 5-541 5400 5459 5519 5575' c-

7521 75''0 79??

54 - - " - "

S521 5579, S&S5, a^.

74/, i^

-r>"-*-y «..~ J-.

a-'i^ ^;?-J

! I "i I '"'1 "i

fe ^Q-'.- ico^^Li vcpjv c>'0'r.r;pQ-rj-i

-X, Ig^o, lt>o^ Si 2?56' 2215

I

25->5 Q10-

iii*,ii, ^^"'j'

I,

5«i j

25(^6 3055;

2564 26221

3146 3204

^07 crx: =

730 875061 875119 875177 875235 575293 875351 S75409

]i 5640 5695 5756

5640 ^15 6795

2

51 6 7 8 9

Ko O

5695 G276 6553

69101

552^

■557^

-6:37

9096

915:3

921'

9669

9726

9:

550242

551299 350::"

5513 ^91 6^5 7544 5119 5694

5571 6449 7026 76f^ 5177 5752

5929 6507 i 7053*

7659 8234

55'!'9

62

62!

62

62

62

62

61

61

61

61

=51625551656 S51747'S51809! 61

61

611

61!

6II 61"

GO 60 60 60

59

59

59 59

- : _ .

^~ "^ -

-. --

■- - -

5409

87.=466

S75524

875.=,

..'!

5957

6045

6102

6

6564

6622

6650

6:.:

.'.-

7141

7199

7256

7314

58;

7717

7774

7532

7559

58i

^292

049

6407

8464

57 j

8566

=924

895!

9CS9

01 ■■

944*^'

9497

95 ~."

f^?!2

571

6

Diff.

TABLE XII. LOGABlTHi:

NUMBERS.

161

2!

4;

6;

S; 9

0_

ida5\

l&55i

3*51!

i7ii5 5361

I/ii

144-2 2)JI2 25^1 3i->J 371S 42>5 4>52 541S 5953

14:

at

3-.

37:

43-^

4^.>9

5474

603d

~ll-56^r.- 1727 ." 2^7 - •25j->* -2:-

4i(e"i;

5531

50-^1 61-52'

3'-i7-

4->.>' 5135 57aj G265

5?1:<2

57-57 6321

KS7;

^34 56 1

-47 SS66''4 ssScfifX 55671^:

5 S»2i 9355 9-

6 ; ~ -

7 H - - _

7955 9311' =*:«7 S516 -"" --^

?:'77

1705^ I7e&i ISlSi lS7:i 1225: laii:?

.£>:* s^

175? 5

3 4 5 6 7

9

-

- -

37621

S517

431^'

».-^— -

45:

- -

.54i-

;--. -

-5375

&iX>

65-26

65? i

7077

7132

^w-%— ~-~

1 ^ 59-^^ 59^2

-^:^- j

6^36

79f"; 597^7 '^765-2 1 Si

3 S7:

r297i 7352: 7iJ7 7-iS^ ■>

tax

r-

14 2-

-- -

27641 *5iS' 2S73 29271 :^?.

3 471t

3i a

9^ 7949i 5j»2

1 ' ■2 f

Sf"fc%5 -ii- 5163; 3217; 8270 53^^

1 ^j5699.

o 6

9

11-5?

16^1'

2753 3254

O

1-.

17-.

2*75

2506

.3:»7

i4-2j

.:.; .r: ..--. 19^

23a^ 2351, ^33 24S5

2559 291^: 2966 ^319

3391.V 3143 3496 3549

3

36/2 :je'-5 6 7

3.<.«?

-i.Ci;

Mt'

168

TABLE Xll. LOGARITHMS OF NUMBERS.

No.

0

1 913567

3

3

913973

4t

5

6

914132

t

8 9142-37

9

DiB.]

820:913314

913920

914026

914079

914134

914290

53 1

1

4ai3

4396 4449

4502

4555

4603

4660

4713

4766

4819

53'

2

4S72

492r 4977

5030

5033

5136

5139

5241

5294

5347

53 i

3

5400

545b 5505

55-53

5611

5664 5716

5769

5822

5375

53 1

4

5927

5930 60a3

6035

6138

6191 6243

6296

6349

6101

53 :

5

fr454

6-507

6559

6612

6G64

6717 6770

6322

6875

6927

£3'

6

6930

7033

7035

7135

7190

7243

7295

7343

7400

7453

53; i

7

7506

7553

7611

7663

7716

7763

7320

7373

7925

7973

52:

8

8030

8083

8135

8163

8240

3293 8345

8397

8450

~ 8502

52

9

8555

8607

8&59

8712

8764

8316 8369

8921

8973

9026

52

830

919073

919130

919183

9192-35

919237

919310 919392

919444

919496

919549

62

1

9601

9653

9706

975-3

9310

9562 9914

9967

920019

920071

52

2

920123

920176 92022.S

920230

920-332

920334 920136

920439

0-541

0593

52

3

0645

0697

0749

0301

0353

09061 09-53

1010

1062

1114

52

4

1166

1213

1270

1322

1374

1426

1473

1530

1532

1634

52

5

1656

1735

1790

1342

1S94

1946

1993

2050

2102

21.54

52

6

2206

22-53

2310

2362

2414

2466

2513

2570

2622

2674

52

7

2725

2777

2329

2331

2933

2935

3037

3039

3140

3192

52

8

3244

3-296

3345

3399

3451

3-j03

355-5

3607

3658

3710

52

9

3762

3314

3365

3917

3969

4021

4072

4124

4176

4223

52

840

924279

924-331

924383

9^44-31

924486

924533

924539

924641

924693

924744

52

1

4796

4343

4399

4951

5003

5a54

5R6

5157

5209

5261

52

2

5312

5364

5415

5-167

5513

5570

5821

5673

5725

5776

52

3

5828

5379

5931

5932

6034

6035

6137

6188

6240

6291

51

4

6342

6394

6445

6497

6543

6600

6651

6702

6754

6305

51

5

6857

6903

6959

7011

7062

7114

7165

7216

7263

7319

51

6

7370

7422

7473

7524

7576

7627

7673

7730

7781

7332

51

7

7833

7935

7936

8037

8033

8140

8191

8242

8293

8345

51

8

8396

8447

8493

S549

S601

36-52

8703

8754

aso5

8357

51

9

8903

8959

9010

9061

9112

9163

9215

9266

9317

9363

51

850

929419

92^70

929521

929572

929623

&29674

929725

929776

929827

929379

51

i

9930

9931

930032

930033

930134

930135

930236

930287

930333

930339

51

2

930440

930491

0542

0592

0643

0694

0745

0796

0347

0393

51

3

0949

lOOO

1051

1102

1153

1201

1254

1305

1356

1407

51

4

14-53

1509

1560

1610

1661

1712

1763

1314

1365

1915

51

5

1966

2017

2065

2113

2169

2220| 2271

2322

2372

2423

51

6

2474

2324

2575

2626

2677

2727 2773

2329

2S79

29-30

51

7

2931

3031

3032

31-33

3133

32-31 3235

3335

3336

3137

51

8

»137

a533

3539

3639

3690

37401 3791

3341

3392

3943

51

9

3993

4014

4094

4145

4195

4246

4296

4347

4397

4443

51

860

934498

93i549 931599

931650

931700

934751

931801

934352 934902

931953

50

J

5003

5054 1 5104

5154

5205

5255

5306

5356 54C6

5457

50

•2

5507

55.53 5603

56-53

5709

5759

5309

5360 5910

5960

50

3

6011

60611 6111

6162

6212

6262

6313

6363

6413

6463

50

4

6514

6564

6614

6665

6715

6765

6315

6365

6916

6S66

50

5

7016

7066

•7117

7167

7217

7267

7317

7367

7413

7463

50

6

7518

7568

7613

7663

7718

7769

7819

7369

7919

7S69

50

7

8019

8069

8119

8169

8219

8269

8320

8370

8420

3470

50

S' 8520

8570' 8620

3670

3720

8770

8320

8870

8920

6970

50

9| 9020

9070 9120

9170

9220

9270

9320

9369

9419

9469

50

870

939519

9.39-569 939619

939669

939719

939769

939319

939869 939918

939963

50

1

i«0018

W0063 9401 13

940165

940213

940267 940317

940367 940417

940467

50

2

0516

0566 0616

0666

0716

0765

0315

0565 0915

0964

50

3

1014

1061

1114

1163

1213

1263

1313

1362 1412

1462

50

4

1511

1561

1611

1660

1710

1760

1809

13-59 1909

19.58

50

5

2003

2058

2107

21-57

2207

2256

2306

2355 2405

2455

50

6

2504

2-554

2603

2653

2702

2752

2301

2S51 2901

29-50

50

7

3000

3049 3099

3143

3193

3247

3297

3-316 3396

3145

49

8

3495

3-544 3-593

3643

3692

3742 3791

3841 3390

3939

49

9

3939

40-3.3 4033

1 4137

1 3

4136

4236 4235

4335 4.384

44-33

49 Diff.

No.

0

1 1

i 3

4:

5

6

7 8

9

TABLE XII. LOGARITHMS OF x\U3IBtKS.

169

No,

550 1 2 3 4 5 6 7 8 9

O

9444S3 4976

."-169 5961

mo2

6'J43 7434 7924 >413 3902

S90 949390

H 9S7

502.3 551- 6'Jic

e^n

6992 7433 7973 -4^2 8951

t4r43- 9926

a

8

Di£f.

9443-1 5074 5567 6059 6551 7041 7532 8022 8511 8999

949485 9975

2 950363 950414 950462

0S51 13:?S 1S23 230S 2792 3276 3760

9ao'954243

6'

0900 13-6 1372 2356 2341 3325 3303

0949 143:

1920 24 13 1 2339 3373 3356

944631 5124 5616 (•103 6600 7090 7531 8070 8560 9048

949536 950024 051 1 0997 14S3 1969 2453 293S 3421 3905

9446-^! 5173 5665 6157 C649 7140 7630 8119 8609 9097

944729 944779 94432 5222] 5715| 6207 6693 7189 7679 8163 8657 9146

5272 5764 6256 6747 7233 7728 8217 87(16 9195

5321 5313 6305 6796

7287 7777 8266 8755 9244

954291 954339

4725 5207 5633 6163 6649 7125 7607 8036 8564

4773 5255 5736 6216 6697 7176 7655 8134 8612

4321 5303 5784 6265 6745 7224 7703 8131 8659

949535 950073 0560| 1046! 1532 2017 2502 2936 3470 3953

949634 919683 950121 950170

0603! 0657

1095'

1530,

2066

114

1629

•.ell!

2550 ! 2599

954337 954435

910 959011 959039 959137 ]; 951^1 9566! 96!4 2 9995 960042 960090

3 960471

4

i

7 8' 9j

920

ll 2' 3 4 5 6 7 8 9

0946 1421 1395 2:369 2343 3316

963733 425 ) 4731 5202 5672 6142 6S11 7<i30 7543 8016

0513

0994

1469

1943'

2417

2890

3363

963335

4307

477S

52491

5719!

6139j

6653 1

71-27

7595

8062

0566 1011 1516 199D 2464 2937 3410

4369

5a5i

5832 6313 6793 7272 7751 8-229 8707

959185 9661

960133 0613! 1039 1563 2033 2511 2935 3457

4918 5399 5380 6361 6310 7320 7799 8277 8755

3034 a513 4001

95^1434 4966 5447

5923 6409 6333 7363 7347 8325 8303

3083 3566 4049

954532 5014 5495 5976 6457 6936 7416 7894 &373 8850

949731 950219 0706 1192 1677 2163 2647 3131 3615 4093

944377 5370 5362 6354 6345 7335 7326 8315 8304 9-292

9497S0!

953267 0754 1240 1726 2211 2696 3180 3663 4146

939-232

9709

960133

06GI

li:i6

1 1611

' 20-5

2559

21)32

3504

9493-29 950316 0303 1-289 1775 2-260 2744 3223 3711 41^

930! 963433 8950 9416 93-2 970317 0812 1-276 1740 2203 2666

96333'^ 4354 43-25 5296 5766

i 6236 6705 7173 7642 8109

959230 9757',

960233 0709! 11341 1653 2132 2606 3079 3552

9593-28 9304

960230 0756 1231 1706 2180 2G53 3126 3599

963929 4401' 4372 5343 5313 62^3 6752 7-220 7633 8156

963977 4443 4919 5393 5-60

9S3530 89951 9463; 9923'

970393 0353; 1322 1736' -2249, 2712

954530 5062 5.543 6024 6505 6934 7464 7942 8421 8393

959375 9S52

9603-28 0304 1279 1753 2227 2701 3174 3646

95462 5110 5592 6072 6553 7032 7512 7990 8463 8946

959423 959471

9900 9947

960376 960423

N<».! 0

963576 90431 9509 9S75

970440 0901 i:369 1332 -2295 2753

3

9636-23 9090 9556

970021 04-6 0951 1415 1879 2:342 a304

6329 6799 7-267 7735 8203

963670 9136 9602

970063

964024 4495 4966 5437 5907 6376 6345 7314 7782 8249

963716 9133 9649

9&4071 4542 5013 5434 5954 6423 6392 7361 7S29 8296

964113

4590 5061 5531 6001 6470 6939 740S 7875

0351 1326 ISOl 2275 2743 3221 3693

0599 1374 1343 2322 2793 3-263 3741

964165 964212

8343 8390 8436 47

963763 9-2-291 96951 970114;970I61 05791 0626:

0997 1461 19-25 2-333 2351

1 (44! 1.50S 1971 2434 2397

1090, 1554 20131 2431 2943

963310 9276 9742

970207 0672 1137 1601 2064

1 252 2939

4637 5103 557S 6043 6517 6936 74^54 7922

4634 5155 56-23 6095 6364 7033 7501 7969

963355 9323 9739

970254 0719 1183 1647 2110 2573 3035

8

963903 9:369 9335

,970:300 0763 1-229 1693 2157 2619 3032

43 43 43 43 43 47 47 47 47 47

47 47 47 47 47 47 47 47 47

47 47 47 47 46 46 46 46 46 46

Diff.

170

TABLE XII. LOGARITHMS OF NUMBERS.

977724 8181 8637 9093 9548

980003 0458 0912 1366 1S19

5426 5875 6324

936772 7219 7666 8113 8559 9005 9450 9895

990339 0783

991226 1669 2111 2554 299.5 3436 3377 4317 4757 5196

K3.

0

1

1 ^ 973220

3 ! 4

973174

9/3266

973313

3636

36S2

372>S

3774

4097

4143

4189

4235

4553

4604

4650

4696

5018

5064

5110

5156

5478

5524

5570

5616

5937

6983

6029

6075

6396

6142

6488

6533

6354

6900

6946

6992

7312

7358

7403

7449

977769

977815

977361

977906

8226

8272

8317

8363

8683

8728

8774

8819

9133

9184

9230

9275

9594

9639

9635

9730

930049

9S0094

930140

930185

0503

0549

0594

0640

0957

1003

I04S

1093

1411

1456

1501

1547

1864

1909

1954

2000

982316

932362

982407

982452

2769

2814

2.359

2904

3220

3265

3310

33L6

3671

3716

3762

3807

4122

4167

4212

4257

4572

4617

4662

4707

5022

5067

5112

5157

5471

5516

5561

5606

5920

5965

6010

6055

6369

6413

6458

6503

936817

986361

986906

9S6951

7264

7309

7353

7393

7711

7756

7800

7845

8157

8202

8247

8291

S604

8643

8693

8737

9049

9094

9138

9183

9494

9539

9583

9623

9939

9983

990023

990072

9903S3 99042S

0472

0516

0827

0871

0916

0960

991270

991315

991359

991403

1713

1753

1802

1846

2156

2200

2244

2288

2593

2642

26S6

2730

3039

3083

3127

3172

34S0

3524

3563

3613

3921

3965

4009

4053

4361

4405

4449

4493

4S01

4845

4889

4933

5240

5284

5328

5372

995679 995723

995767

995311

6117 6161

6205

6249

6555 6599

6643

6637

6993 7037

7030

7124

7430 7474

7517

7561

7867 7910

7954

7998

8303 8347

8390

8434

8739 8732

8826

8869

9174 9218

9261

9305

9609

9652 3

9696 3

9739

1

4

5

6

973359 973405

3-20

3t66

4281

4327

4742

4788

5202

5248

5662

5707

6121

6167

6579

6625

7037

7083

7495

7541

977952

977993

8409

8454

8865

8911

9321

9366

9776

9321

980231

980276

0635

0730

1139

1134

1592

1637

2045

2090

932497

982543

2S49

2994

3401

3446

3852

3897

4302

4347

4752

4797

5202

5247

5651

5696

6100

6144

6548

6593

986996

987010

7443

7488

7890

7934

8336

8381

8732

8826

9227

9272

9672

9717

990117

990161

0561

0605

1004

1049

991448

991492

1890

1935

2333

2377

2774

2819

3216

3260

3657

3701

4097

4141

4537

4581

4977

5021

5416

5460

995354

995398

6293

6337

6731

6774

7163

7212

7605

7648

8041

8035

8477

8521

8913

8956

9348

9392

9783

9826 6

5

7 8 1 9

DifF.

973451 973497 973543

46

3913 3959

4^05

46

4374

4420

4406

46

4834

4880

4926

46

5294

53-10

53;>o

16

6753

5799

5346

46

6212

6258

6304

46

6671

6717

67(j3

ir,

7129

7175

7^21)

46

7686

7632

7678

46

978043

978089

978.3;,

40

8500

8546

8591

46

8956

9002

9047

IG

9412

9457

9503

46

9367

9912

9958

46

950322

980367

930412

15

0776

0821

ose:

45

1229

1275

1320

45

1633

172,3

1773

15

2135

2181

22"G

45

982588

982633

9S2678

10

3040

3085

3i:-!P

45

3491

3536

3531

45

3942

3987

4032

45

4392

4437

44,-^

45

4842

4887

4932

45

5292

5337

63S2

45

5741

5786

6«;^"

45

6189

6234

6279

45

6637

6682

6727

45

987035

987130

987175

45

7532

7577

7622

45

7979

8024

800r!

■15

8425

8470

8514

45

8371

8916

8960

45

S316

9361

9405

45

9761

9306

98oO

44

9S0206

990250

990294

44

0650

0694

073S

41

1093

1137

Ii5^

44

991536

991580

991625

44

1979

2023

2067

44

2421

2465

2509

44

2863

2907

29^1

14

3304

3348

?o':Z

±4

3745

3789

3833

44

4185

4229

42"3

14

4625

4609

4-'-:

■A

5065

5108

5152

44

5504

5547

5591

44

995942

S959S6

996030

44

6330

6424

6468

44

6818

6862

69.. i^

4

7255

7299

7343

44

7692

7736

7779

44

8129

8172

82: ;i

»1

8564

8608

fc6u2

44

9000

9043

9087

44

9435

9479

95'32

.4:

9870

9913

995,

DiCfj

7

8

9

TABLE X 1 1 1 .

LOGARITHMIC SINES, COSINES, TANGENTS.

AND

0

OTANGENTS.

172 TABLE XIII. LOGARITHIVIIC SINES,

NOTE.

The table here given extends to minutes only. The usual methcd of extending such a table to seconds, by proportional parts of the difference between two consecutive logarithms, is accurate enough for most purposes, especially if the angle is not very small. When the angle is very small, and great accuracy is required, the following method may be used for sines, tangents, and cotangents.

I. Suppose it were required to find the logarithmic sine of 5' 24" By the ordinary meth'^i VQ should have

lo<x. sin. 5' = 7.162696

diff. for 24" = 31673

log. sin. 5' 24" -- 7.194369

Ttic more accurate method is founded on the proposition in Trigo nometry, that the sines or tangents of very small angles are propor tional to the angles themselves. In the present case, therefore, we have sin. 5': sin. 5' 24' = 5' : 5' 24 ' = 300" : 324". Hence sin. .5' 24'

= '"' ^.^""' , or log. sin. 5' 24" = log. sin. 5' + log. 324 log. 30ii

The difference for 24" wiU therefore, be the difference between tlie logarithm of 324 and the logarithm of SCO. The operation will stand thus :

log. 324 = 2..510.145

locr. 300 =2.477121

diff. for 24 = 33424

los. sin. 5' = 7.162696

W. sin. 5' 24" = 7.196120

■'o

Comparing this value with that given in tables that extend to seconds we find it exact even to the last figure

PI

II. Given log. sin. A = 7.004438 to find A. The sine next less than this in the table is sin. 3 = 6.940817. Now we have sin. 3' : sin. A

= 3 . A. Therefore, A = "1]^7 > oi" log- ^ = ^^S- ^ + ^^o- ^^^- ^^ - log. sin. 3'. Hence it appears, that, to find the logarithm of A in

COSINES, TANGENTS, AND COTANGENTS. 173

minutes, we must add to the logarithm of 3 the difference oetween

lojr. sin, A and log. sin. 3*.

log. sin. ^1 = 7.004438

loiT. sin. 3' =- 6.940S47

G3591 W, 3 = 0.477121

A --= 3.473 0.540712

r,j. 4 ^ 3/ 28.38". By the common method we should have found

A = 3' 30. .54".

The same method applies to tangents and cotangents, except that in the case of cotangents the differences are to be subtracted.

* The radius of this table is unity, and the characteristics % 8, 7, and 6 stand respectively for —1, —2, —3, and —4.

174

0^

TABLE Xlll, «f.OGARlTHMIC SINES,

179^

M.

0 1

2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 13 19

20 21 22 23 24 25 26 27 23 29

30 31 32 33 34 35 30

3r

33 39

40 41 42 43 44 45 46 47 43 49

50 51 52 53 54 55 56 57 53 59 60

M.

Sine.

Inf. neg.

6.463726 .764756 .940347

7.0657S6 .162696 .241877 .303324 .366S16 .417963

7.463726 .505113 .542906 .577663 .609353 .639316 .667345 .694173 .718997 .742478

7.764754 .735943 .806146 .325451 .3439.34 .361662 .S7S695 .895035 .910379 .926119

7.940342 .9.55032 .963370 .9S2233 .995193

3.007737 .020021 .031919 .043501 .054731

8.065776 .076500 .036965 .097133 .107167 .116926 .126471 .13.5310 .1449.53 .15-3907

8.162631 .171230 .179713 .137935 .196102 .204070 .211395 .219531 .2271.34 .2.34.557 .241855

Cosine.

D. 1 .

5017.17

2934.85

2052.31

1615.17

1319.69

1115.73

966.53

8.52. 54

762.62

639.33 629.81 579.37 536.41 499.33 467.14 433.31 413.72 391.35 371.27

353.15 336.72 321.75 303.05 295.47 233.33 27.3.17 263.23 253.99 245.33

237.33 229.80 222.73 216.03 209.81 203.90 193.31 193.02 133.01 133.25

173.72 174.42 170.31 166.39 162.65 159.03 155.66 152.33 149.24 146.22

14.3..33 140.54 137.36 135.29 132.80 130.41 123.10 125.87 123.72 121.64

D. 1".

Cosine.

0.000000 .000000 .000000 .000000 .000000 .000000

9.999999 999999 .999999 .999999

9.999993 .999993 .999997 .999997 .999996 .999996 .999995 .999995 .999994 .999993

9.999993 .999992 .999991 .999990 .999939 .999939 .999933 .999937 .999936 .999935

9.999933 .999932 .999931 .999930 .999979 .999977 .999976 .999975 .999973 .999972

9.999971 .999969 .999963 .999966 .999964 .999963 .999951 .999959 .999953 .999956

9.9999.54 .999952 .999950 .999943 .999946 .999944 .999942 .999940 .999933 .999936 .999934

Sine.

D. 1'

.00 .00 .00 .00 .00 .00 .00 .00 .01 .01

.01 .01 .01 .01 .01 .01 .01 .01 .01 .01

.01 .01 .01 .01 .02 .02 .02 .02 .02 .02

.02 .02 .02 .02 .02 .02 .02 .02 .02 .02

.02 .03 .03 .03 .03 .03 .03 .03 .03 .03

.03 .03 .03 .03 .03 .03 .03 .04 .04 .04

D. 1".

Tang.

D. 1".

Inf. neg.

6.463726 .764756 .940347

7.0657S6 .162696 .241373 .303525 ..366317 .417970

7.463727 .505120 .542909 .577672 .609357 .639320 .667849 .694179 .719003 .742484

7.764761 .73.5951 .806155 .825460 .843944 .561674 .873703 .895099 .910394 .926134

7.94035S .9.55100 .963589 .932253 .99.5219

S. 007809 .020044 .031945 .043527 .054309

8.06^5306 .07653' .036997 .097217 .107203 .116963 .126510 .135351 .144996 .153952

8.162727 .171323 .179763 .183036 .196156 .204126 .211953 .219641 .227195 .234621 .241921

Cotang.

5017.17

29.34.85

2032.31

1615.17

1319.69

111.5.73

966.54

852.55

762.63

639.33 629.81 -579.37 536.42 499.39 467.15 433.82 413.73 391.36 371.23

353.16 336.73 321.76 .303.07 295.49 233.90 273.13 263.25 254.01 245.40

237. .35 229.32 222.75 216.10 209.83 203.92 193.33 193.05 183.03 183.27

173.75 174.44 170.a4 166.42 162.63 159.11 155.69 1.52.41 149.27 146.25

143.36 140.57 137.90 135.32 132.84 130.44 123.14 12.5.91 123.76 121.63

D. 1".

Cotang. I M.

Infinite.

3.536274 .235244 .0.591.53

2.934214 .337304 .753122 .691175 .633133 .5320.30

2.536273 .494830 .457091 .422323 .390143 .360180 .332151 .305321 .230997 .2.57516

2.23-5239 .214049 .19.3345 .174540 .156056 .133326 .121292 .104901 .039106 .073366

2.059142 .044900 .031111 .017747 .004781

1.992191 .979956 .963055 .956473 .945191

1.934194 .923469 .913003 .9027-33 .892797 .83.3037 .873490 .664149 .85.50f>4 .&46043

1.837273

.823672 .8202.37 .811964 .80-3344 .795874 .783047 .780359 .772305 .765379 .753079

Tang.

90O

89"

COSINES, TANGENTS, AND COTANGENTS.

175

1T83

M.

Sine

11

12 .3 14 15 .(] 17 13 .9

20 ?1 >£;'2 23 24 iij 28 27

29

30 32 32 33 34 35 36 3' 38 39

40 41 42 43 41 45 Ifi 47 43

«

6i

o2 53 54

55 56 57 58 59 60

D. 1'

8,2418r)-> .213033 .256' 19-1 .263012 .2693S1 .276614 .2S3213 .2Si)773 .296^07

8.303794 .3149.54 .321027 .327016 .332924 .333753 .3-14504 .350131 .3.J5733 .361315

8.366777 .372171 .377499 .332762 .337962 .3931111 .393179 .4031':!9 .403161 .413063

S.417919 .422717 .427462 .432156 .436300 .441.394 .445941 .450440 .454393 .459301

8.463665 ,467935 .472263 .476493 .480693 .4.34343 .483963 .493040 .497073 .501030

5.505015 .503974 .512^67 .516726 .520551 .524313 ..523102 .531823 .535.523 .539136 .542319

Cosine.

119.63 117.69 115.30 113.93 11221 110.50 103. S3 107.22 105.66 104.13

102.66 101.22 99.82 93.47 97.14 95.86 94.60 93.38 92.19 91.03

89.90 83.80 87.72 86.67 85.64 84.64 83.66 82.71 81.77 80.36

79.96 79.09 78.23 77.40 76.53 75.77 74.99 74.22 73.47 72.73

72.00 71.29 70.60 69.91 69.24 63.-59 "67.94 67.31 66.69 66.03

65.43 61.89 64.32 63.75 63.19 62.65 62.11 61.53 61.06 60.55

I

M.. I Cosine.

D 1''

9.999934 .999932 .999929 .999927 .999925 .999922 .999920 .999913 .999915 .999913

9.999910 .999907 .999905 .999902 .999399 .999397 .999394 .999391 .999333 .999335

9.999332 .999379 .999376 .999373 .999370 .999367 .999364 .999361 .999353 .999354

9.999351 .999348 .999344 .999341 ,999333 .999334 .999331 .999327 .999324 .999320

9.999316 .999313 .999309 .999305 .999301 .999797 .999794 .999790 .999736 .999732

9.999773 .999774 .999769 .999765 .999761 .9997.57 .999753 .999743 .99974 4 .999740 .9997,35

D. 1".

Sine.

.04 .04 .04 .04 .04 .04 .04 .04 .04 .04

.04 .04 .04 .05 .05 .05 .05 .05 .05 .05

.05 .05 .05 .05 .05 .05 .05 .05 .05 .05

.06 .06 .06 .06 .06 .06 .06 .06 .06 .06

.06 .06 .06 .06 .06 .06 .07 .07 .07 .07

.07 .07 .07 .07 .07 .07 .07 .07 .07 .07

Tang.

D. 1".

D. 1".

3.241921 .249102 .256165 .263115 .269956 .276691 .283323 .239356 .296292 .302634

8.303834 .31.5046 .321122 .327114 .333025 .3338.56 .314610 .350289 .355895 .361430

8.366395 .372292 .377622 .332839 .338092 .39.3234 .398315 .403333 .408304 .413213

8.418063 .422369 .427613 .432315 .436962 .441.560 .446110 .450613 .455070 .459431

8.463349 .463172 ,4724.54 .476693 .430-92 .485050 .489(70 .493250 .497293 .501293

8.505267 .509200 .513998 .516961 .520799 ..524536 ..523349 .532030 .535779 .5.39447 .543034

Cotang.

M.

119.67 117.72 115.84 114.02 112.25 110.54 103.87 107.26 105.70 104.18

102.70 101.26 99.87 93.51 97.19 95.90 94.65 93.43 92.24 91.08

89.95 88.85 87.77 86.72 85.70 84.69 83.71 82.76 81.82 80.9]

80.02 79.14 78.29 77.45 76.63 75.83 75.05 74.23 73.53 72.79

72.06 71.35 70.66 69.93 69.31 63.65 63.01 67.33 66.76 66.15

65. 55 64.96 64.39 63.82 63.26 62.72 62.18 m.65 61.13 60.62

1.758079 .750893 .743<35 .736335 ,730044 .723309 .716677 .710144 .703703 .697366

1.691116 ,6349.54 ,673373 672S86 666975 .661144 .65.5390 .619711 .644105 .633570

1.6.33105 .627703 ,622373 .617111 .611903 .606766 .601635 .596662 .591696 .536737

1.5319.32 ,577131 .572332 .567635 .563033 .553440 ,553890 .549337 .544930 .540519

1,5.36151 .531823 ..527546 .523307 .519103 .514950 ,510330 .506750 ,.502707 .493702

1.494733 .490300 .436902 .483039 .479210 .475414 .471651 .467920 .464221 .460553 .456916

CoUin?. I D. 1".

Tang.

60 59 53 57 56 55 54 53 52 51

50 49 43 47 46 45 41 43 42 41

40 39 33 37 36 35 34 33 32 31

30

29 23 27 26 25 24 23 22 21

20 19 18 17 16 15 14 13 12 11

10 9 8 7 6 5 4 3 2 1 0

M.

91'^

889

176

3="

TABLE XIII. LOGAHITHMIC SINES,

173"

M.

0 1 2 3 4 5 6 7 8 9

10 II 12 13

14 15 16 17 IS 19

20 21 22 23 21 25 26 27 23 29

30 31 32 33 34 35 36 37 3S 39

40 41 42 43 44 45 46 47 43 49

50 51 52 53 54 55 56 57 53 59 60

M.

Sine.

8.542319 .546422 ..549995 .553.539 ,557054 ,560540 ,563999 .567431

.Ol

4214

8.577566 .580392 ,584193 ,587469 .590721 ,593943 .597152 .6J0332 .603439 .606623

8.6097.34 .612323 .615391 .613937 .621962 .62^965 .627943 .631911 .6333.54 .636776

8.63G630 .642563 .64:5423 .643274 .651102 .653911 .636702 .659475 .662230 .664963

8.667639 .670393 .673030 .675751 .678405 .631043 .6-3665 .6-6272 .633-63 .6914.33

8.693998 .696.543 .699)73 .701539 .704090 .706.377 ,709049 ,711.507 .713952 .716333 .718300

Cosine.

D, 1".

60.04 59.55 59.06 53.53 53.11 57.65 57.19 56.74 56.30 55.57

55.44 55.02 54.60 54.19 53.79 53.39 53.00 52.61 52.2:3 51.86

51.49 51.12 50.77 50.41 50.06 49.72 49.33 49.04 48.71 43.39

43.06 47.75 47.43 47.12 46.32 46.52 46.22 4.5.93 45.63 45.35

45.07 44.79 44.51 44.24 43.97 43.70 43.44 43.18 42.92 42.67

42.42 42.17 41.93 41.63 41.44 41.21 40.97 40.74 40.51 40.29

D. 1".

Cosine. D. 1".

9.999735 .999731 .999726 .939722 .999717 .999713 .999703 .999704 .999699 .999694

9.999639 .999635 .999630 .999675 .999670 .999665 .999660 .9996.55 .999650 .999645

9.999640 .999635 .999629 .999624 .999619 .999614 .999608 .999603 .999.597 .999592

9.9995S6 .999581 .999575 .999570 .999564 .999.553 .999.553 .999.547 .999.541 .999535

9.999529 .999.524 .999513 .999512 .999506 .999500 .999493 .999437 .999431 .999475

9.999469 .999463 .999456 .999450 .999443 .999437 .999431 .999424 .999413 .999411 .999404

Sine,

.07 .07 .03 .03 .03 .08 .08 ,08 .08 .08

,03 ,03 .03 .03 ,03 ,03 .08 .03 .03 .09

.09 .09 .09 .09 .09 .09 .09 .09 .09 .09

.09 .09 .09 .09 .09 .10 ,10 ,10 ,10 ,10

,10 .10 .10 ,10 ,10 .10 .10 .10 ,10 ,10

,10

,1

,1

,1

,1

,1

,1

,1

,1

,1

D. 1".

Tang,

D. 1".

8.543034 .546691 .550268 .553317 .557336 .56J328 .564291 ..567727 1137

.0/

.57

4520

8.577877 ,531203 .584514 .537795 .591051 ,594283 ,597492 .600677 .603339 .606973

8.610094 .613189 .616262 .619313 .622343 .62-53.52 .623340 .631303 .634256 .637134

8.640093 .6429-2 .645353 .643701 .651.537 .654352 .6.57149 .659923 .662639 .66.5433

8.603160 .670370 .673563 .676239 .673900 .631544 .634172 .636784 .639331 ,691963

8.694529 .697081 .699617 .702139 .704046 ,707140 .709618 .712033 .714534 .716972 .719396

Cotang.

60.12 59.62 59.14 58.66 58.19 57.73 57.27 56.62 56.38 55.95

5.5.10 54.63 54.27 53.87 53.47 53.08 52.70 52.32 51.94

51.58 51.21 50.85 50.50 50.15 49.81 49.47 49.13 48.80 . 48.48

48.16 47.84 47. .53 47.22 46.91 46.61 46.31 46.02 45.73 45.45

45.16 44.33 44.61 44.34 44.07 4.3.30 43.54 43.23 43.03 42.77

42.52 42.23 42.03 41.79 41.55 41.32 41.08 40.85 40.62 40.40

D, 1".

Cotang.

M.

1.456916

60

.453309

59

.4497.32

58

.446183

.57

.442664

.56

,439172

55

.435709

54

,432273

53

.428863

52

,425480

51

1.422123

50

.418792

49

,41.5436

48

,412205

47

,408949

46

,405717

45

.402503

44

,399323

43

.396161

42

,39.3022

41

1.389906

40

,3.36311

39

.383738

38

330637

37

377657

36

,374648 .371660 .36-692 .365744 .362816

1.359907 .357018 ,3.54147 ..351296 .343463 .345643 .342851 ..340072 .3.37311 .a34567

1.331840 .3291.30 .32&4.37 •323761 .321100 .313456 .315323 .313216 .310619 .308037

1.30.5471 .302919 .300383 .297861 ,295354 ,292360 .290382 ,287917 .28.5466 .253023 ,280604

Tang.

9«3

•il-'

COSINES, TAiMGENTS, AND COTAKGENTS.

n7

176^

M

0 1 2 3

4 5 6

7 8 9

10 11 12 13 14 15 16 17 13 19

20 21 22 83 24 25 26 27 23 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 44 45 46 47 43 49

50 51 52 53 54 55 56 57 53 59 60

Sine

D 1".

Cosine.

D. 1"

. '-.718300 .7212)4 .723595 .725972 .723337 .730633 .733027 .735354 .737667 .739969

S. 742259 .744536 .746302 .749055 .751297 .753523 .755747 .7579")5 .76)151 .762337

3.761511 .766675 .76S323 .770970 .773101 .77.5223 .777333 .779434 .781524 .733605

3.735675 .737736 .739737 .791323 .793359 .795331 .797394 .799397 .801392 .803376

8.80.5852 .807819 .809777 .311726 .81.3657 .81.5.599 .317522 .819436 .321313 .323240

8.325130 .327011 .823384 .8.30749 .832607 .834456 .836297 .8.33130 .339956 .341774 .843535

40.06 39. -^4 39.62 39.41 39.19 33.93 33.77 33.57 33.36 33.16

37.96 37.76 37.56 37.37 37.17 36.93 36.30 36.61 36.42 36.24

36.06 35.83 35.70 35.53 35.. 35 35.13 35.01 31.31 34.67 31.51

31.31 31.18 34.02 .33.36 33.70 33.54 33.39 .33.23 33.03 32.93

32.73 32.63 32.49 32.34 32.20 32.05 31.91 31.77 31.63 31.49

31.36 31.22 31.03 30.95 30.82 30.69 30.56 30.43 30.30 30.17

9.999404 .999393 .999391 .999334 .999378 .999371 .999364 .999357 .9993.50 .999313

9.999336 .999329 .999.322 .999315 .999303 .999301 .999294 .999237 .999279 .999272

9.999265 .999257 .9992.50 .999242 .999235 .999227 .999220 .999212 .999205 .999197

9.999189 .999181 .999174 .999166 .999153 .999150 .999142 .999131 .999126 .999113

9.999110 .999102 .999094 .999036 .999077 .999069 .999':)61 .999053 .999044 .999036

9.999027 .999019 .999010 .999002 .993993 .993931 .993976 .993967 .993953 .9939.50 .99-^941

Tang.

D. 1"

Cosine. I D. 1".

Sine

.11 .11 .11 .11 .11 .11 .11 .11 .12 .12

.12 .12 .12 .12 .12 .12 .12 .12 .12 .12

.12 .12 .12 .12 .13 .13 .13 .13 .13 .13

.13 .13 .13 .13 .13 .13 .13 .13 .13 .13

.14 .11 .14 .14 .14 .14 .14 .14 .14 .14

.14 .14 .14 .14 .14 .14 .15 .15 .15 .15

D. 1".

8. 71 9396 .721306 .724204 .726533 .723959 .731317 .733663 .735996 .733317 .740626

8.742922 .745207 .747479 .749740 .751939 .754227 .756453 .753663 .760372 .763065

8.765216 .767417 .769573 .771727 .773366 .775995 .773114 .730222 .732320 .784403

8.736436 .7335.54 .790613 .792662 .794701 .796731 .793752 .800763 .802765 .804753

8.806742 .803717 .810633 .812641 .3145^9 .816529 .813161 .320334 .822293 .824205

3.326103 .827992 .829374 .831743 .833613 .83^5471 .837.321 .839163 .840993 .842325 .844644

Cotang.

Cotang.

40.17 39.95 39.74 39.52 39.31 39.10 33.89 33.63 33.43 38.27

38.07 37.83 37.63 37.49 37.29 37.10 36.92 36.73 36.55 36.36

36.18 36.00 35.83 35.65 35.43 35.31 35.14 31.97 34.80 34.64

34.47 34.31 34.15 33.99 33.83 33.63 33.52 33.37 33.22 33.07

32.92 32.77 32.62 .32.43 32.33 32.19 32.05 31.91 31.77 31.63

31. .50 31.36 31.23 31.09 30.96 30.83 30.70 30.57 30.45 30.32

D. 1".

1.230604 .273194 .275796 .273412 .271011 .263633 .266337 .264004 .261633 .259374

1.257078 .254793 .252521 .250260 .243011 .245773 .243.547 .241332 .239123 .236935

1.234754 .232533 .230422 .223273 .226131 .224005 .221886 .219773 .2176i0 .215592

1.213514 .211446 .209337 .207333 .205299 .203269 .201243 .199237 .1972.35 .195212

1.193253 .191233 .189317 .137359 .135411 .133471 .131.539 .179616 .177702 .17.5795

1.173397 .172003 ,170126 .163252 ,166337 .164529 .162679 .1603.37 .159002 .157175 .1.55356

Tang.

M.

60 59 53 57 56 55 54 53 52 51

50 49 43 47 46 45 44 43 42 41

40 39 33 37 36 35 34 33 32 31

30 29

23 27 26 25 24 23 22 21

20 19 18 17 16 15 14 13 12 11

10 9 8 7 6 5 4 3 2 1 0

M.

86<?

178

40

TABLE XIII. LOGARITHMIC SINES,

175'

M.

0 1 2 3 4 5 6 7 8 9

10 il 12 13 14 15 16 17 13 19

20 21 22 23 24- 25 26 27 23 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 44 45 46 47 43 49

50 51 52 53 54 55 56 57 53 59 60

Sine.

8.S435S5 .S453S7 .847183 .348971 .850751 .852.525 .8-54291 .856049 .857801 .859546

8.S612S3 .863014 .864733 .866455 .863165 .S69S63 .871.565 .87.3255 .874933 .876615

8.878235 .879949 .831607 .333253 .834903 .836542 .838174 .889301 89 1 421 .893035

8.394643 .896246 .897342 .899432 .901017 .902596 .904169 .905736 .907297 .903353

8.910404 .911949 .913433 .91.5022 .916550 .918073 .919'.91 .921103 .922610 .924112

8.925609 .927100 .923587 .930063 .931544 .933015 .934431 .935942 .937393 .938350 .940296

1 M. Cosine.

^o

D. 1".

30.05 29.92 29.80 29.63 29.-55 29.43 29.31 29.19 29.03 28.96

23.84 28.73 23.61 23.50 23.39 28.23 23.17 23.06 27.95 27.34

27.73 27.63 27.52 27.42 27.31 27.21 27.11 27.00 26.90 26.30

26.70 26.60 26.51 26.41 26.31 26.22 26.12 26.03 25.93 25.34

25.75 25.66 25.56 25.47 25.38 25.29 25.21 25.12 25.03 24.94

24.86 24.77 24.69 24.60 24.52 24.43 24.-35 24.27 24.19 24.11

Cosine.

D. 1'.

9.99S94I .993932 .993923 .993914 .993905 .993896 .998.387 .993378 .993369 .993360

9.993351 .993341 .993332 .993323 .993313 .993304 .993795 .993785 .993776 .993766

9.998757 .993747 .998733 .993723 .993718 .993703 .993699 .993639 .995679 .993669

9.998659 .993649 .993639 .993629 .993619 .99S609 .993599 .993.589 .993573 .993563

9.993553 .993-S43 .993537 .993527 .993516 .993506 .993495 .993485 .998474 .993464

9.993453 .993442 .993431 .993421 .993410 .993399 .993338 .993377 .993.366 .9933-55 .993344

D. 1".

Sine.

.15 .15 .15 .15 .15 .15 .15 .15 .15 .15

.15 .15 .15 .16 .16 .16 .16 .16 .16 .16

.16 .16 .16 .16 .16 .16 .16 .16 .16 .17

.17 .17 .17 .17 .17 .17 .17 .17 .17 .17

.17 .17 .17 .17 .17 .18 .18 .18 .18 .18

.18

18

.18

18 .18 .18 .18 .18 .18 .18

Tang.

D. 1".

8.844644 .346455 .843260 .850057 .851846 .853628 .85.5403 .857171 .858932 .860636

8.S62433 .864173 .865906 .867632 .869-351 .871064 .872770 .874469 .876162 .877349

8.879529 .881202 .832369 .834530 .886185 .837833 .889476 .891112 .892742 .894366

8.895934 .897596 .899203 .900303 .902398 .90-3937 .905570 .907147 .903719 .910235

8.911346 .913401 .914951 .916495 .9130-34 .919563 .921096 .922619 .924136 .925649

8.927156 .923658 .9-301-55 .931647 .9-33134 .934616 .936093 .937565 .9390-32 .940494 .941952

D 1". Cotang.

30.20 30.07 29.95 29.83 29.70 29.53 29.46 29.35 29.23 29.11

29.00 23.88 23.77 23.66 23.55 23.43 23.32 23.22 23.11 23.00

27.89 27.79 27.63 27.-58 27.47 27.37 27.27 27.17 27.07 26.97

26.87 26.77 26.67 26.58 26.48 26.-39 26.29 26.20 26.10 26.01

2-5.92 25.83 25.74 25.65 25.56 25.47 25.38 25.29 25.21 25.12

25.04 24.95 24.87 24.78 24.70 24.62 24.53 24.45 24.37 24.29

Cotang. 1 D. 1".

1.1553S6 .153545 .151740 .149943 .143154 .146372 .144597 .142329 .141063 .139314

1.137567 .135327 .1-34094 .132363 .130649

.123936 .127230 .125531 .123333 .122151

1.120471

.113793 .117131 .11.5470 .113315 .112167 .110524 .108383 .107258 .105634

1.104016 .102404 .100797 .099197 .097602 .096013 .094430 .092853 .091231 .039715

LOSS 154 .086599 .085049 .033505 .081966 .080432 .078904 .077381 .075864 .074351

1.072344 .07i:J42 .069345 .0633.53 .066366 .065384 .063907 .062435 .060968 .059506 .058048

Tang.

8»<3

COSINES, lANGENTS, AND COTANGENTS.

M.

Sine.

D. 1".

0

8.940296

1

.941733

2

.913174

3

.944606

4

.946034

5

.947456

6

.948374

7

.950237

8

.951696

9

.953100

10

3.954499

11

.955394

12

.957234

13

.953670

14

.960052

15

.961429

16

.962301

17

.964170

18

.965531

19

.933993

20

3.963249

21

.969600

22

.970947

23

.972239

24

.973623

25

.974902

26

.976293

27

.977619

23

.978941

.930259

3l

^ 8.931573

31

.932333

32

.934189

33

.93.5491

34

.936789

35

.933033

36

.939374

37

.990660

33

.991943

39

.993222

40

3.994497

41

.995763

42

.997036

43

.993299

44

.999560

45

9.000316

46

.002069

47

.003318

43

.004563

49

.005305

50

9.007044

51

.003278

52

.009510

53

.010737

54

.011962

55

.013182

56

.014400

57

.015613

53

.016324

59

.018031

60

.019235

M.

»5<3

Cosine.

24.03 23.95 23.87 23.79 23.71 23.63 23.55 23.48 23.40 23.32

23.25 23.17 23.10 23.02 22.95 22.83 22.31 22.73 22.66 22.59

22.52 22.45 22.33 22.31 22.24 22.17 22.10 22.03 21.97 21.90

21.33 21.77 21.70 21.64 21. .57 21.51 21.44 21.33 21.31 21.25

21.19 21.12 21.06 21.00 20.94 20.83 20.82 20.76 20.70 20.64

20.53 20.52 20.46 20.40 20.35 20.29 20.23 20.17 20.12 20.06

D. 1".

9.99S344 .993333 .993322 .998311 .993300 .998239 .993277 .993266 .993255 .993243

9.993232 .998220 .993209 .993197 .993186 .993174 .993163 .998151 .993139 .993123

9.99SI16 .993104 .993092 .993030 .993063 .993056 .993044 .993032 .993020 .993008

9.997996 .997984 .997972 .997959 .997947 .997935 .997922 .997910 .997897 .997885

9.997372 .997360 .997847 .997335 .997822 .997809 .997797 .997734 .997771 .997753

9.997745 .997732 .997719 .997706 .997693 .997630 .997667 .9976;j-l .997641 .997623 .997614

Cosine. D. 1".

Sine.

.18 .19 .19 .19 .19 .19 .19 .19 .19 .19

.19 .19 .19 .19 .19 .19 .19 .20 .20 .20

.20 .20 .20 .20 .20 .20 .20 .20 .20 .20

.20 .20 .20 .20 .21 .21 .21 .21 .21 .21

21 .21 .21 .21 .21 .21 .21 .21 .21 .21

.22 .22 .22 .22 .22 .22 .22 .22 .22 .22

Tans.

8.941952 .94:^0-1 .944352 .946295 .947734 .949168 .950597 .952021 .953441 .954356

8.956267 .957674 .959075 .960473 .961866 .963255 .964639 .966019 .967394 .963766

8.970133 .971496 .972355 .974209 .975560 .976906 .978243 .979536 .930921 .932251

8.933577 .934899 .936217 .937532 .938342 .990149 .991451 .992750 .994045 .995337

8.996624 .997903 .999188

9.000465 .001733 .0^3007 .004272 .005534 .006792 .008047

9.009293 .010546 .011790 .013031 .014268 .015502 .016732 .017959 .019183 .020403 .021620

D. 1".

D. 1'.

24.21 24.13 24.05 23.97 23.90 23.82 23.74 23.67 23.59 23.51

23.44 23.36 23.29 23.22 23.14 23.07 23.00 22.93 22.86 22.79

22.72 22.65 22.58 22.51 22.44 22.37 22.30 22.24 22.17 22.10

22.04 21.97 21.91 21.84 21.78 21.71 21.65 21.59 21.52 21.46

21.40 21.34 21.27 21.21 21.15 21.09 21.03 20.97 20.91 20.85

20.80 20.74 20.63 20.62 20.56 20.51 20.45 20.39 20.34 20.28

Cotang.

179

174-0

M.

Cotang.

1.058048 .056596 .055148 .053705 .052266 .050332 .049403 .047979 .046559 .045144

1.0437.33 .042326 .040925 .039527 .038134 .036745 .035361 .033981 .032606 .031234

1.029367 .023504 .027145 .025791 .024440 .023094 .021752 .020414 .019079 .017749

1.016423 .015101 .013783 .012468 .011153 .009851 .008549 .007250 .005955 .004663

1.003376 .002092 .000312

0.999535 .993262 .996993 .995728 .994466 .993203 .991953

0.990702 .939454 .988210 .986969 .985732 .984498 .933268 .982041 .980817 .979597 .978380

D. 1".

6C 59 58 57 56 55 54 53 52 51

50 49 48 47 46 45 44 43 42 41

40 39 38 37 36 35 34 33 32 31

30 29 28 27 26 25 24 23 22 21

20 19 18 17 16 15 14 13 12 11

10 9 8 7 6 5 4 3 2 1 0

Tang. M-

84<3

180

60

C- 0 i y ^ <? TABLE Xlll. LOGARITHMIC SINES,

173^

M.

0 1 •2 3 4

Sine.

D. 1'

10 11 12 13 14 15 16 17 IS 19

20 21 22 23 24 25 26 27 2S 29

30

31 32 33 34 35 36 37 38 39

40 41 42 43 44 45 46 47 48 49

50 51 52 53 54 55 56 57 58 59 60

9.019235 .020435 .021632 .0228-25 .024016 .02.5203 .026366 .027567 .028744 .029918

9.0310-9 .032257 .033421 .034582 .0.35741 .036896 .038048 .039197 .040.342 .041485

9.042625 .013762 .044895 .046026 .047154 .048279 .049400 .050519 .051635 .0.52749

9.053859 .054966 .056071 .057172 .058271 .059367 .060460 .061.551 .062639 .063724

9.064-06 .065885 .066962 .06-036 .069107 .070176 .071242 .0723% .07.3366 .074424

9.075460 .076533 .077583 .078631 .079676 .080719 .081759 .082797 .083832 .084864 .085894

M. ! Cosine.

20.00 19.95 19.89 19.84 19.78 19.73 19.67 19.62 19.57 19.51

19.46 19.41 19.36 19.30 19.25 19.20 19.15 19.10 19.05 19.00

18.95 18.90 18.85 18.80 18.75 18.70 18.65 18.60 18.. 55 18.50

18.46 18.41 18.36 18.31 18.27 18.22 18.17 18.13 18.08 18.04

17.99 17.95 17.90 17.66 17.81 17.77 17.72 17.68 17.64 17.59

17. .55 17.51 17.46 17.42 17.38 17.34 17.29 17.25 17.21 17.17

Cosine.

D. 1".

9.997614 .997601 .997588 .997574 .997.561 .997.547 .997534 .997520 .997507 .997493

9.997480 .997466 .997452 .997439 .997425 .997411 .997397 .997333 .997369 .997355

9.997341 .997327 .997313 .997299 .997285 .997271 .997257 .997242 .997228 .997214

9.997199 .997185 .997170 .997158 .997141 .997127 .997112 .997098 .997083 .997063

9.997053 .997039 .997024 .997009 .996994 .996979 .996964 .996949 .996934 .996919

9.996904 .996889 .996874 .996858 .996843 .996828 .996812 .996797 .996782 .996766 .996751

Sin*.

D. 1".

.22 22 22

.22

,22 22

.23 23 23 23

23 ,23 .23 23 .23 .23 .23 .23 .23 .23

.23 .23 .24 .24 .24 .24 .24 .24 .24 .24

.24 .24 .24 .24 .24 .24 .24 .24 .25 .25

.25 .25 .25 .25 .25 .25 .25 .25 .25 .25

.25 .25 .25 .25 .26 .26 .26 .26 .26 .26

Tang.

D. 1".

D.l

9,021620 .022834 .024044 .025251 .026455 .027655 .028852 .030046 .031237 .032425

9.033609 .034791 .r,35C69 .337144 .038316 .039485 .040651 .M1813 .042973 .044130

9.0452^4 .046134 .047.582 .04S727 .049869 .051008 .0.52144 .053277 .054407 .055535

9.056659 .0.57781 .058900 .060016 .0611.30 .062240 .063.348 .064453 .065556 .066655

9.067752 .068846 .069933 .071027 .072113 .073197 .074278 .075.356 .076432 .077505

9.078576 .079644 .080710 .081773 .082S33 .08.3^91 .084947 .086000 .087050 .088098 .089144

20.23 20.17 20.12 20.06 20.01 19.95 19.90 19.85 19.79 19.74

19.69 19.64 19.. 58 19.53 19.48 19.43 19.38 19.33 19.28 19.23

19.18 19.13 19.08 19.03 18.98 18.93 18.89 18.84 18.79 18.74

18.70 18.65 18.60 18.56 18.51 18.46 18.42 IS.. 37 18.33 18.28

18.24 18.19 18.15 18.10 1S.06 18.02 17.97 17.93 17.89 17.84

17.80 17.76 17.72 17.67 17.63 17.59 17.55 17.51 17.47 17.43

Cotang I D. 1".

Cotang.

60

0.976380

.977166

59

.9759.56

58

.974749

57

.973545

56

.972315

55

.971148

54

.£699.54

53

.968763

52

.967575

51

0.966391

50

.965209

49

.964031

4L

.962856

47

.961684

46

.960515

45

.9.59349

14

.9.58187

43

.957027

42

.955870

41

0.9.54716

40

.95.3566

39

.952418

38

.951273

37

.950131

£6

.948992

35

.947856

34

.946723

33

.945593

,32

.944465

31

0.943341

l'.0

.942219

29

.941100

28

.939984

27

.938870

26

.937760

25

.936652

24

.935547

25

.934441

22

.933345

21

0.9.32248

20

.9311.54

19

.930(62

18

.928973

17

.927887

16

.926303

15

.925722

14

.924644

13

.92.3.-68

12

.922495

11

0.921424

10

.920356

9

.919290

8

.918227

7

.917167

6

.916109

5

.915053

4

.914000

3

.912950

2

.911902

1

.S10^C6

0 M

Tang.

oeo

830-

COSINES, TANGENTS, AND COTANGENTS

181

M.

0 1 2 3

4 5 6

7 8 9

10 11 12 13 14 15 16 17 13 19

20 21 22 23 24

2;5

26 27 23 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 44 45 46 47 43 49

50 51 52 53 54 55 56 57 53 59 60

Sine.

D. 1".

M.

9.085394 .036922 .037947 .033970 .039990 .091008 .092024 .093037 .094047 .095056

9.096062 .097(165 .09S066 .099065 .100[)62 .101056 .102013 .103037 .104025 .105010

9.105992 .106973 .107951 .105927 .109901 .110373 .111842 .112309 .113774 .114737

9.115693

.116656 .117613 .113567 .119519 ,120469 .121417 .122362 .123306 .124243

9.125187 .126125 .127060 .127993 .123925 .129354 .130731 .131706 .1.32630 .133551

9.134470 .13.53S7 .136303 .137216 .133123 .139037 .139944 .140350 .141754 142655 .143555

CoBine.

17.13 17.09 17.05 17.00 16.96 16.92 16.88 16.84 16.30 16.76

16.73 16.69 16.65 16.61 16.57 16.53 16.49 16.46 16.42 16.33

16.34 16.30 16.27 16.23 16.19 16.16 16.12 16.03 16.05 16.01

15.98 15.94 1.5.90

15.87 15.83 15.80 15.76 15.73 15.69 15.66

15.62 15.59 15.56 15.52 15.49 15.45 15.42 15.39 15.35 15.32

15.29 15.26 15.22 15.19 15.16 15.13 15.09 15.06 15.03 15.00

D. 1".

9.996751 .996735 .996720 .996704 .9966SS .996673 .996657 .996641 .996625 .996610

9.996594 .996573 .996562 .996.M6 .996530 .996514 .996198 .996482 .996465 .996449

9.996433 .996417 .996400 .996334 .996363 .996351 996335 .996318 .996302 .996235

9.996269 .996252 .996235 .996219 .996202 .996135 .996163 .996151 .996134 .996117

9.996100 .996033 .996066 .996049 .996032 .996015 .995993 .995930 .995963 .995946

9.995928 .995911 .995394 .995876 .995359 .995341 .995323 .995306 .995783 .995771 .995753

Sine.

.26 .26 .26 .26 .26 .26 .26 .26 .26 .26

.27 .27 .27 .27 .27 .27 .27 .27 .27 .27

.27 .27 .27 .27 .27 .27 .23 .28 .28 .23

.28 .28 .28 .28 .28 .23 .23 .23 .23 .23

.23 .23 .28 .29 .29 .29 .29 .29 .29 .29

.29 .29 .29 .29 .29 .29 .29 .29 .29 .30

9.039144 .090137 .091223 .1)92266 .093302 .094336 .095367 ,096395 .097422 .093446

9.099463 .100487 •101504 .102519 .103532 .104542 .105550 .1065.56 .107559 .108560

9.109559 .1105.56 .111551 .112543 .113533 .114.521 .115507 .116491 .117472 .118452

9.119429 .120404 .121377 .122343 .123317 .124234 .125249 .126211 .127172 .123130

9.129037 .130041 .130994 .131944 .132393 .133339 .1347^34 .135726 .136667 .137605

9.133542 .139476 .140409 .141310 .142269 .143196 .144121 .14.5044 .145966 .146335 .147803

D. 1",

17.39 17.35 17.31

17.27 17.23 17.19 17.15 17.11 17.07 17.03

16.99 16.95 16.91 16.83 16.84 16.80 16.76 16.72 16.69 16.65

16.61

16.53

16..54

16.50

16.47

16.43

16.39

16.36

16.32

16.29

16.25 16.22 16.18 16.15 16.11 16.03 16.04 16.01 15.93 15.94

15.91 15.87 15.84 15.81 15.77 15.74 15.71 15.63 1.5.64 15.61

15.58 15.55 15.51 1.5.43 15.45 15.42 15.39 1.5.36 15.32 15.29

0.910S56 .909S13 .908772 .907734 .906693 .905664 .904633 .903605 .902573 .901554

0.900532 .899513 .893496 .897451 .896463 .895453 .894450 .893444 .892441 .891440

0.890441

.839444 .833449 .837457 .836467 ,835479 .884493 .883509 .832.523 ,831543

0.880571 .879596 .878623 .877652 .876633 .875716 .874751 .873789 .872328 .871870

0.870913 .869959 .869006 .863056 .867107 .866161 .865216 .864274 .863333 .862395

Cotang.

D. 1'.

0.861453 .860.524 .859591 .853660 .857731 .856304 .85.5379 ,854956 .854034 ,853115 .852197

60 59 53 57 56 55 54 53 52 51

50 49 48 47 46 45 44 43 42 41

40

39

33

37 I

36 I

35

34

33

32

31

30 29 23 27 26 25 24 23 22 21

20 19 18 17 16 15 14 13 12 11

10 9 8 7 6 5 4 3 2 1 0

Tang.

M.

07-

8«-

182

so

TABLE XIII. LOGARITHMIC SINES,

171<i

M.

0 1 2 3 4 5 6 7 8 9

10 11

12 13 14 15 16 17 13 19

20 21 22 23 24 25 26 27 23 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 44 45 46 47 43 49

50 51 52 53 54 55 56 57 53 59 60

M.

Sine

9.143555 .144453 .145349 .146243 .147136 .143026 .143915 .149302 .150636 .151569

9.152451 .1.53.330 .1.34203 .1.55033 .1-559.57 . 1.56330 .1.57700 .153569 .159435 .160301

9.161164 .162025 .162335 .163743 .164600 .1654.54 .166307 .1671.59 163003 .1633.56

9.169702 .170.547 .171.339 .172230 .173070 .173903 .174744 .175573 .176411 .177242

9.173072 .173900 .179726

..130551 .181374 .132196 .13.3016 .133831 .184651 .135466

9.136230 .187092 .187903 .183712 .139519 .190-325 .191130 .191933 .192734 .193534 .194332

Cosine.

D. 1".

4.97 4.93 4.90 4.S7 4.34 4.31 4.78 4.75 4.72 4.69

4.66 4.63 4.60 4.57 4-54 4.51 4.43 4.45 4.42 4.39

4.. 36 4.33 4.. 30 4.27 4.24 4.22 4.19 4.16 4.13 4.10

4.07 4.05 4.02 3.99 3.96 3.94 3.91 13.83 -3.35 3. S3

3.80 3.77 3.75 3.72 3.69 .3.67 3.64 3.61 3.-59 3.56

3.54 3.51 3.48 3.46 3.43 3.41 3.33 .3.36 -3.33 3.31

D. 1".

Cosine.

9.995753 .995735 .995717 .99.5699 995631 .995664 .995646 .995628 .995610 .995591

9.995573 .99.5555 .995537 .995519 .995501 .995432 .995464 .995446 .995427 .995409

9.99-5390 .995372 .995353 .995334 .995316 .995297 .995273 .99.3260 .995241 .995222

9.995203 .995184 .995165 .995148 .995127 .995103 .995039 .995070 .995051 .995032

9.99.5013 .994993 .994974 .994955 .994935 .994916 .994396 .994377 .994357 .994333

9.994818 .994793 .994779 .994759 .994739 .994720 994700 .994630 .994660 .994640 ■994620

Sine.

D.r

.30 .30 .30 .30 .30 .30 .30 .30 .30 .30

.30 .30 .30 .30 .30 .31 .31 .31 .31 .31

.31 .31 .31 .31 .31 .31 .31 .31 .31 .31

.31 .32 .32 .32 .32 .32 .32 .32 ..32 .32

.32 .32 .32 .32

.32 .32

.a3

..33 .33 .33

.33 .33 .33 .33 .33 .33 .33 .33 .33 .33

D. 1".

Tang. D. 1". Cotang.

9.147803 .143713 .149632 .150544 .151454 .152363 .153269 .1.54174 .15.5077 .155978

9.156877 .157775 .158671 .159565 .1604.57 .161.317 .162236 .163123 .164003 .164892

9.16.5774 .166654 .167532 .168409 .169234 .170157 .171029 .171899 .172767 .173634

9.174499 .17.5362 .176224 .177084 .177942 .178799 .179655 .180508 .181360 .182211

9.183059 .18.3907 .184752 ,185597 .186439 .187280 .188120 .188953 .139794 .190629

9.191462 .192294 .193124 .19.3953 .194730 .19.5606 .196430 .1972.53 .193074 .19S394 199713

Cuiang.

15.26 15.23 15.20 15.17 15.14 15.11 1.5.03 15.05 15.02 14.99

14.96 14.93 14.90 14.87 14.84 14.81 14.78 14.75 14.73 14.70

14.67 14.64 14.61 14..53 14.56 14.-53 14.50 14.47 14.44 14.42

14.39 14.36 14.33 14.31 14.28 14.25 14.23 14.20 14.17 14.15

14.12 14.09 14.07 14.04 14.02 1.3.99 13.97 13.94 13.91 13.89

13.86 13.84 1-3.81 13-79 1-3.76 1-3.74 13.71 1-3.69 13.66 13.64

D. 1".

0.852197

60

.851282

59

.850363

58

.849456

57

.848546

56

.847637

55

.846731

54

.845826

53

.844923

52

.844022

51

0.843123

50

.842225

49

.841329

43

.8404.35

47

.839543

46

.833653

45

.837764

44

.836377

43

.835992

42

.835103

41

0.834226

40

.8-33.346

39

S32463

38

.831591

37

.830716

36

.829343

35

.828971

34

.828101

33

.827233

32

.826366

31

0.825501

30

.824633

29

.823776

28

.822916

27

.822053

26

.821201

25

.820345

24

.819492

23

.818640

22

.817789

2i

0.816941

20

.816093

19

.81.5243

18

.814403

17

.813561

16

.812720

15

.811330

14

.811042

13

.810206

12

.809371

11

0.808538

10

.807706

9

.806376

8

.806047

7

.805220

6

.804394

5

.803570

4

.802747

3

.801926

2

.801106

1

.800237

0

Tang.

M.

as* 2

81

COSINES, TANGENTS, AND COTANGENTS.

183

170^

0 1 2 3 4 5 6

i

S 9

10 11

12 13 14 15 16 17 IS 19

20 21 22 23 24 2.", 26 27 23 29

30 31 32 33 34 35 36 37 3S 39

40

41

42

43

44

45

4(r

47

48

49

50 51 52 53 54 55 56 57 58 59 60

9.194332 .195129 .195925 .196719 .197511 .193.302 .199091 .199379 .200666 .201451

9.202234

.203017 .203797 .201577 .20.5351 .206 1 31 .2)6906 .207679 .2,03452 .209222

9.200992 .210760 .211.526 .212291 .2131.55 .213313 .214579 .215333 .216097 .216354

9.217609 .213363 .219116 .219363 .220613 .221367 .222115 .222361 .223396 .221349

9.225092 .225333 .226573 .227311 .223013 .223734 .229513 .230252 .230934 .231715

9.232114 .233172 .233399 .231625 .235319 .236073 ,236795 .2.37515 .2332.-5 .233953 .2.396"1

13.28 13.26 13.23 13.21 13.18 13.16 13.13 13.11 13.03 13. 16

13.MI 13.01 12.99 12.96 12.91 12.92 12.89 12.37 12.85 12.82

12.80 12.73 12.75 12.73 12.71 12.63 12.66 12.64 12.62 12.59

12.. 57 12.55 12.53 12. .50 12.43 12.46 12.44 12.42 12.39 12.37

12..35 12.. 33 12.31 12.29 12.26 12.21 12.22 12.20 12.18 12.16

12.14 12.12 12.10 12.07 12.05 12.03 12.01 11.99 11.97 11.95

9.994620 .991600 .994-530 .991.560 .99454 ) .994519 .994190 .991479 .994459 .994433

9.994413 .994393 .991377 .994357 .991336 .991316 .994295 .994274 .9942.54 .994233

9.994212 .994191 .994171 .9941.50 .994129 .994103 .994037 .994060 .994045 .994024

9.994003 .993932 .993960 .993939 .993913 .993597 .993375 .903354 .993332 .993311

9.993739 .993763 .993746 .993725 .993703 .993631 .993660 .99.3633 .99.3616 .993594

9.993572 .993550 .993528 .993.506 .993434 .993462 .993140 .993413 .99.3396 .993374 .993351

.33 .33 .34 .31 .34 .34 .34 .34 .34 .34

.34 .34 .34 .31 .34 .34 .34 .34 .35 .35

.35 .35 .35 .35 .35 .35 .35 .35 .35 .35

.35 .35 .•35 ..35 .36 .36 .36 .36 .36 .36

..36 ..36 .36 .36 ..36 .36 .36 .36 .36 .36

.37 .37 .37 .37 .37 .37 .37 .37 .37 .37

9.199713 .200529 .201315 .2021.59 .202971 .203732 .204592 .205400 .206207 .207013

9.207317 .203619 .209420 .210220 .211013 .211815 .212611 .213405 .214193 .214939

9.215780 .216563 .217356 .218142 .213926 .219710 .220492 .221272 .222052 .222830

9.223607 .224332 .225153 .225929 .226700 .227471 .22^239 .229007 .229773 .230539

9.231302 .232065 .232326 .233586 .234345 .235103 .235359 .236614 .237.363 .233120

9.233372 .239622 .240371 .211118 .211365 .242610 .243354 .244097 .244839 .245579 .216319

1.3.62 13.. 59 13.57 13.54 13.52 13.49 13.47 13.45 13.42 13.40

13.33 13.35 13.33 13.31 13.23 13.26 13.24 13.21 13.19 13.17

13.15 13.12 13.10 1.3.03 1.3.06 13.03 13.01 12.99 12.97 12.95

12.92 12.90 12.83 12.36 12.84 12.82 12.79 12.77 12.75 12.73

12.71 12.69 12.67 12.65 12.63 12.60 12. .58 12.56 12. .54 12.52

12.. 50 12.43 12.46 12.44 12.42 12.40 12.33 12.36 12.34 12.32

0.800237 .799471 .7936.55 .797341 .797029 .796213 .795403 .794600 .793793 .792937

0.792183 .791331 .790530

.739780 .788982 .788185 .787339 .736595 .785302 .78501 1

0.784220 .783432 .782644 .781858 .731074 .7^0290 .779503 .778723 .777943 .777170

0.776393 .775618 .774844 .774071 .773300 .772529 .771761 .770993 .770227 .769461

0.763693 .767935 .767174 .766414 .765655 .764397 .764141 .763336 .762632 .761880

0.761128 .760378 .759629 .753332 .758135 .757390 .756646 .75.5903 .755161 .754421 .753631

60 59 53 57 56 55 54 53 52 51

50 49 43 47 46 45 44 43 42 41

40 39 33 37 36 35 34 33 32 31

30 29 23 27 26 25 24 23 22 21

20 19 18 17 16 15 14 13 12 11

10 9 8 7 6

4 3 2 1 0

99^

184

10^

TABLE XIII.

LOGARITHMIC SINES,

169!

M.

0 1

2 3 4 5 6 7 8 9

10 11 12 13 14 lo 16 17 18 19

20 21 22 23 24 25 26 27 28 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 4t 45 46 47 43 49

50 51 52 53 54 55 56 57 53 59 60

M.

Sine.

9.239670 .2403S6 .241101 .241814 .242526 .243237 .243947 .244656 .245363 .246069

9. 246 r 75 .247478 .24S181 .24S3S3 .219583 .250282 .250980 .251677 .252373 .253067

9.253761 .2.54453 .255144 .255834 .256523 .25721 1 .257893 .258583 .259263 .259951

9.260633 .261314 .261994 .262673 .263351 .264027 .264703 .26.5377 .266r)51 .266723

9.267395 .263065 .263734 .269402 .270069 .270735 .271400 .272064 .272726 .273338

9.274049 .274708 .275367 .276025 .276631 .2773.37 .277991 .278645 .279297 .279943 .230599

Cosino.

D. 1".

11.93 11.91 11.89 11.87 11.35 11.83 11.81 11.79 11.77 11.75

11.73 11.71 11.69 11.67 11.65 11.63 11.61 11.59 11.58 11.56

11.54 11. .52 11.50 11.43 11.46 11.44 11.42 11.41 11.39 11.37

11.35 11.33 11.31 11.30 11.23 11.26 11.24 11.22 11.20 11. L9

11.17 11.15 11.13 11.12 11.10 11.08 11.06 11.05 11.03 11.01

10.99 10.93 10.96 10.94 10.92 10.91 10.89 10.87 10.86 10.S4

D. 1".

Cosine.

9.993351 .993329 .99.3307 .99.3284 .993262 .993240 .99.3217 .993195 .993172 .993149

9.993127 .993104 .993081 .993059 .993036 .993013 .992990 .992967 .992944 .992921

9.992898 .992375 .992852 .992329 ,992306 .992783 .992759 .992736 .992713 .992690

9.992666 .992643 .992619 .992596 .992572 .992549 .992525 .992501 .992478 .992454

9.992430 .992406 .992382 .992359 .992335 .992311 .992237 .992263 .9922.39 .992214

9.992190 .992166 .992142 .992118 .992093 .992069 .992044 .992020 .991996 .991971 .991947

D. 1".

.37 .37 .37 .37 .37 .37 .38 .38 .38 .33

.38 .38 .38 .33 .38 .38 .33 .38 .38 .33

.38 .38 .39 .39 .39 39 39 39 39 39

39

39

39

39

.39

.39

.39

.39

.40

.40

.40 .40 .40 .40 .40 .40 .40 .40 .40 .40

.40 .40 .40 .41 .41 .41 .41 .41 .41 .41

Sine. D. 1". Cotang

Tang.

9.246319 .247057 .247794 .243530 .249264 .249993 .250730 .251461 .252191 .252920

9.253648 .254374 .255100 .255824 .256547 .257269 .257990 ,258710 .259429 ,260146

9.260863 .261578 .262292 .263005 .263717 .264428 .265133 .265347 .266555 .267261

9.267967 ,263671 .269375 .270077 .270779 ,271479 ,272178 .272876 .273573 .274269

9.274964 ,275653 ,276351 .277043 .277734 .278424 .279113 .279301 .230438 .281174

9.281858 .232542 .233225 .283907 .234.588 .235263 .235947 .236624 .287301 .237977 .2386.52

D, 1".

12.30 12.28 12.26 12.24 12.22 12.20 12.18 12.17 12.15 12.13

12.11 12.09 12.07 12.05 12.03 12.01 12.00 11.98 11.96 11.94

11.92 11.90 11.89 11.87 11.85 11.83 11.81 11.79 11.78 11.76

11.74 11,72 11,70 11.69 11.67 11,65 11.64 11.62 11.60 11.58

11.57 11.55 11.53 11.51 11.50 11.48 11.46 11.45 11.43 11,41

11,40 11,38 11.36 11,35 11.33 11.31 11.30 11.23 11.26 11.25

D, 1".

Cotang,

0.753681 ,752943 .752206 .751470 ,750736 ,750002 .749270 ,748539 ,747309 ,747080

0.746352 ,745626 ,744900 ,744176 ,743453 ,742731 ,742010 ,741290 ,740571 ,7.39854

0,739137 ,738422 ,737708 ,736995 ,736283 .735572 ,734862 ,7341.53 ,73.3445 ,732739

0,732033 ,731329 .7.30625 .729923 ,729221 ,728521 ,727822 ,727124 ,726427 ,725731

0.725036 ,724342 ,723649 ,722957 ,722266 ,721576 ,720887 .720199 ,719512 ,718826

0,718142 .717453 ,716775 716093 ,715412 ,714732 .714053 ,713376 ,712699 .712023 ,711348

Tang,

1003

»$»*

COSINES, TANGENTS, AND COTANGENTS.

M.

0 1

2 3 4 5 6 7 8 9

10 11 12 13 14 l.j 16 17 IS 19

20 21 22 23 21 25 26 27 23 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 44 45 46 47 43 49

50 51

54 55 56 57 53 59 60

M.

185

168°

Sine.

9.230599 .231243 .231897 .232.544 .233190 .233336 .284480 .235124 .235766 .236103

9.237043

.237633 .238326 .283964 .239600 .290236 .290370 .291504 .292137 .292763

9.293399 .291029 .294658 .295286 .29.5913 .296.539 .297161 .297733 .293412 .299031

9.299555 .300276 .300395 .391514 ..3021.32 .302743 .303364 ..303979 .304593 .305207

9.305319 .3061.30 .307041 .307650 .3082,59 .3)8367 .309474 .310030 .310635 .311239

9.311893 .312495 .31.3097 .31.3693 .314297 .314397 .315495 .316092 .316039 .317234 .317879

D. 1".

10.82 10.81 10.79 10.77 10.76 10.74 10.72 10.71 10.69 10.67

10.66 10.64 10.63 10.61 10.59 10.53 10.56 10. .55 10.53 10.51

10.50 10.43 10.47 10.45 10.43 10.42 10.40 10.39 10.. 37 10.. 36

10.. 34 10.33 l(l.31 10. .30 10.23 10.20 10.25 10.23 10.22 10.20

10.19 10.17 10.16 10.14 10.13 10.12 10.10 10.09 10.07 10.06

10.04

10.03

10.01

10.00

9.93

9.97

9.96

9.94

9.93

9.91

Co-sine. D. 1"

Cosine.

9.991947 .991922 .991897 .991873 .99134^ .991823 .991799 .991774 .991749 .991724

9.991699 .991674 .991619 .991624 .991.599 .991574 .991549 .991524 .991498 .991473

9.99144^ .991422 .991397 .991372 .991346 .991321 .991295 .991270 .991244 .991218

9.991193 .991167 .991141 .991115 .991090 .991064 .991038 .991012 .9909S6 .990960

9.990934 .990908 .990332 .990355 .990829 .990303 .990777 .990750 .990724 .990697

9.990671 .990645 .990618 .990.591 .990565 .990538 .990511 .990485 .9904.58 .990431 .990404

Sine.

D. 1".

.41 .41 .41 .41 .41 .41 .41 .41 .41 42

.42 .42 .42

.42 .42 .42 .42 .42 .42 .42

.42 .42 .42 .42 .42 .43 .43 .43 .43 .43

.43 .43 .43 .43 .43 .43 .43 .43 .43 .43

.44 .44 .44 .44 .44 .44 .44 .44 .44 .44

.44 .44 .44 .44 .44 .44 .45 .45

D. 1".

Tang.

9.23^652 .239326 .239999 .290671 .291312 .292013 .292632 .293350 .29liM7 .294634

9.295349 .296 )13 .296677 .297339 .298001 .298662 .2993i!2 .299930 .300033 .301295

9.301951 .302607 .303261 .303914 ..304.-)67 .305218 .305369 .306519 .307168 .307816

9.303463 .309109 .3097.54 .310399 .311042 .311635 .312327 .312968 .31.3603 .314247

9.314335 .315523 .316159 .316795 .3174.30 .318064 .313697 .319.330 .319961 .320592

9.321222 ..321S51 .322479 .323106 .3237.33 .324358 .324933 .32.5607 .32H231 .3268.53 .327475

Cotang.

D. 1".

11.23 11.22 11.20 11.18 11.17 11.15 11.14 11.12 11.11 11.09

11.07 11. '^6 11.04 11.03 11.01 11.00 10.98 10.97 10.95 10.93

10.92 10.90 10.89 10.87 10.^6 10.84 10.^3 10.81 10.8') 10.78

10.77 10.76 10.74 10.73 10.71 10.70 10.68 10.67 10.65 10.64

10.62 10.61 10.60 10.58 10.. 57 10.55 10.54 10. .53 10.51 10.50

10.48 10.47 10.46 10.44 10.43 10.41 10.40 10.39 10.37 10.36

D. 1".

Cotang.

0.711343 .710674 .710001 .709329 .708658 .707987 .707318 .706650 .705933 .705316

0.704651 .703987 .703323 .702661 .701999 .701333 .700678 .700020 .699362 .698705

0.693049 .697.393 .696739 .6960*6 .6954.33 .691782 .694131 .693431 .692832 .692184

0.691537

.690591 .690246 .639601 .638953 .633315 .637673 .63703-2 .636392 .685753

0.635115 .684477 .633841 .633205 .632570 .631936 .631303 .630670 .630039 .679403

0.673778 .673149 .677521 .676>!94 .676267 .675042 .675017 .674.393 .673769 .673147 .672525

Tang.

lOlo

r8«

186

TABLE Xlll L05AR1TJMIC SINES,

16TC

M.

0 1 2 3 4 5 6 7 S 9

10 11 12 13 14 15 16 17 18 19

20 21 22 23 24 25 26 27 28 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 44 45 46 47 48 49

50 51 52 53 54 55 56 57 5S 59 60

M.

Si

ine

9.317879 .318473 .319066 .3196.0 .320249 .320840 .321430 .322019 .322607 .323194

9.323780 ..324366 .324950 .32.5534 .326117 .326700 .327281 .327862 .328442 .329021

9.329.399 ..330176 .330753 ..331329 .331903 .332478 .333051 .333624 .334195 .334767

9.355337 .335906 .336475 .337043 .337610 .333176 .338742 .339-307 .339871 .340431

9.340996 .341558 .342119 .342679 .ai32.39 .343797 .3443.55 .344912 .34.5469 .346024

9.346579 .347134 .347637 .348240 .348792 .349343 .349393 .350443 .350992 .351540 .352088

Cosine.

D. 1".

Cosine.

9.90 9.83 9.87 9.86 9.34 9. S3 9.81 9.-0 9.79 9.77

9.76 9.75 9.73 9.72 9.70 9.69 9.63 9.66 9.65 9.64

9.62 9.61 9.60 9.53 9.57 9.. 56 9.54 9.53 9.52 9.50

9.49 9.43 9.46 9.45 9.44 9.43 9.41 9.40 9.39 9.37

9.36 9.35 9.34 9.-32 9.31 9.30 9.29 9.27 9.26 9.25

9.24 9.22 9.21 9.20 9.19 9.17 9.16 9.15 9.14 9.13

D. 1".

9.990404 .990378 .990351 .990324 .990297 .990270 .y9ri243 .990215 .990183 .990161

9.990134 .990107 .990079 .9900.52 .990025 .989997 .989970 .939942 .939915 .989837

9.989860 .989832 .989804 .939777 .939749 .989721 .989693 .939665 .939637 .989610

9.989-532 .989553 .939525 .989497 .939469 .989441 .939413 .939385 .9393.56 .989328

9.989300 .989271 .989243 .939214 .939186 .9391.57 .939123 .989100 .989071 .939042

9.989014 .988985 .988956 .938927 .933393 .933369 .938340 .933311 .988782 .988753 .'933724

Sine.

D. 1".

.45 .45 .45- .45 .45 .45 .45 .45 .45 .45

.45 .45 .46 .46 .46 .46 .46 .46 .46 .46

.46 .46 .46 .46 .46 .46 .46 .47 .47 .47

.47 .47 .47 .47 .47 .47 .47 .47 .47 .47

.47 .47 .47

.48 .48 .48 .48 .48 .43 .48

.48

.48 .48 .48 .48 .48 .48 .43 .49 .49

D. 1".

Tang. I D. 1".

9.327475 .328095 .323715 .329334 .3299.53 .3.30.570 .331137 .331803 .332413 .333033

9.333646 .3.34259 .334871 .335482 .336093 .336702 .337311 .337919 .338527 .339133

9.3397.39 .340344 .340943 .341552 .342155 .3427.57 343358 3439.38 .3445.58 .345157

9.345755 ..346.353 ..346949 .347.545 .343141 .348735 .349329 ..349922 .3.50514 .351 IG6

9.351697 ..352287 .352376 .3.53465 .3540.53 ..3:34640 .355227 .355813 ..356398 .356982

9.357566 .3.58149 .358731 .3.59313 .3.59893 .360474 .361053 .3616.32 .362210 .362787 363.364

Cotang.

10.35 10.33 10.32 10.31 10.29 10.23 10.27 10.25 10.24 10.23

10.21 10.20 10.19 10.17 10.16 10.15 10.14 10.12 10.11 10.10

10.03 10.07 10.06 10.05 10.03 10.02 10.01 10.00 9.98 9.97

9.96 9.95 9.93 9.92 9.91 9.90 9.88 9.87 9.66 9.85

9.84 9.82 9.81 9.80 9.79 9.78 9.76 9.75 9.74 9.73

9.72 9.70 9.69 9.63 9.67 9.66 9.65 9.63 9.62 9.61

D. 1".

Cotang.

0.672525 .671905 .671285 .670666 .670047 .669430 .663813 .663197 .667582 .666967

0.666354 .665741 .665129 .664518 .663907 .663293 .662689 .662031 .661473 .660867

0.660261 .659656 .6590.52 .6.5S448 .657845 .657243 .656642 .6.56042 .655442 .654843

0.654245 .6.53647 .6.5.3051 .652455 .651859 .651265 .6.50671 .650078 .649486 .648594

0.648303 .647713 .&47124 .646.535 ,645947 .645360 .644773 .644187 .643602 .643018

0.6424:34 .641851 .641269 .640687 .640107 .639.526 .638947 .638368 .637790 .637213 .636636

Tang.

103?

77=

COSINES TANGENTS, AND COTANGENTS.

13^

M.

0 1 2 3 4 5 6 7

181 1663

Sine.

D. 1".

10 U 12 13

14 15 16 17

IS 19

20 21 22 23 24 25 26 27 2S 29

30 31 32 33 31 3o 3d 37 3S 39

40 41 42 43 41 45 46 47 4S 49

50 51 52 53 54 55 56 57 53 59 60

9.352'H8 .352635 .353181 .353726 .354271 .3.') IS 1 5 .355353 .355901 .3.56113 .356934

9.357524 .35SU64 .358603 .359141 .359673 .360215 .360752 .361287 .361822 .362356

9.362389 .353122 .363954 ..364485 .365016 .365546 .366075 .3^)66)4 .367131 .367659

9. .368 1 85 .368711 .369236 369761 .370285 .370SOS .371330 .371852 .372373 .372894

9..37;M14 .373933 .374452 .374970 .375487 .376003

,377035 .377549 .3780S3

9.373577 .379089 .379601 .380113 .380621 .381134 .381643 .382152 .3S2661 .3S3163 .383675

Cosine.

9.11 9.10 9.09 9.08 9.07 9.05 9.04 9.03 9.02 9.01

8.99 8.98 8.97

8.96 8.95 8.91 8.92 8.91 8.90 8.89

8.83 8.87 8.86 8.84 8.33 8.82 8.81 8.80 8.79 8.78

8.76 8.75 8.74 8.73 8.72 8.71 8.70 8.69 8.63 8.66

8.65 8.61 8.03 8.62 8.61 8.60 8.59 8.. 53 8.57 8.56

8.55 8.53 8.52 8.51 8.. 50 8.49 8.48 8.47 8.46 8.45

D.l".

9.938724 .988695 .938666 .938636 .938607 .933573 .988.548 .938519 .938489 .938460

9.988430 .9^3401 .988371 .933342 .933312 .913282 .9>3252 .938223 .938193 .938163

9.933133 .933103 .988073 .988043 .938013 .937933 .937953 .937922 .937892 .987862

9.9873.32 .937801 .987771 .937740 .937710 .937679 .937649 .937618 .937.588 .987557

9.937526 .937496 .937465 .937434 .957403 .937372 .937341 .987310 .937279 .987248

9.937217 .937186 .987155 .937124 .937092 .987061 .937030 .936998 .936967 .936936 .936904

M.

103 2

Cosine.

D. 1".

Tang.

Sine.

.49 .49 .49 .49 .49 .49 .49 .49 .49 .49

.49 .49 .49 .50 .50 ..50 .50 .50 .50 .50

.50 .50 .50 .50 .50 .50 .50 .50 .50 .51

.51 .51 .51 .51 .51 .51 .51 .51 .51 .51

.51 .51 .51 .51 .51 .52 .52 .52 .52 .52

.52 ..52 .52 .52 ..52 .52 .52 52 .52 .52

D. 1"

9.363364 .363910 .361515 .365f)90 .365664 .366237 .366810 .367332 .367953 .363524

9.369094 .369663 •370232 .370799 .371367 .371933 .372499 .373064 .373629 .374193

9.374756 .375319 .375881 .376442 .377003 .377563 .378122 .373631 .379239 .379797

9.3803.54 .330910 .331466 .332020 .382575 .333129 .333632 .384231 .334786 .385337

9.335388 .386433 .386937 .387536 .333031 .383631 .339178 .339724 .390270 .390315

9.391360 .391903 .392447 .392939 .39.3531 .394073 .394614 .395154 .395694 .396233 .396771

Cotang.

9.60 9.59 9.58 9.57 9.. 55 9.54 9.53 9.52 9.51 9.50

9.49 9.48 9.47 9.45 9.44 9.43 9.42 9.41 9.40 9.39

9.33 9.37 9.36 9.-35 9.33 9.32 9.31 9.30 9.29 9.23

9.27 9.26 9.25 9.24 9.23 9.22 9.21 9.20 9.19 9.18

9.17 9.16 9.15 9.14 9.12 9.11 9.10 9.09 9.08 9.07

9.06

9.(je

9.04 9.03 9.02 9.01 9.00 8.99 8.93 8.97

0.636636 .636060 .635435 .634910 .0.34336 .633763 .633190 .632618 .632047 .631476

0.630906 .630337 .629768 .629201 .628633 .628067 .627501 .0269.36 .626371 .625807

0.625244 .624681 .624119 .623558 .622997 .6221.37 .621873 .621319 .620761 .620203

0.619640 .619090 .618.534 .617930 .617425 .616371 .616318 .615766 .615214 .614663

0.614112 .61.3562 .613013 .612464 .611916 .611369 .610822 .610276 .609730 .609185

0.6)8640 .608097 .607553 .607011 .6()6469 .605927 .605386 .604846 .604306 .603767 .6')3229

M.

60 59

53

I

D. 1". I Cotang. D. 1"

54 53 52 51

50 49 48 47 46 45 44 43 42 41

40

39

38

37

36

35 !

34

33

32

31

30 29 23 27 26 25 24 23 22 21

20 19 18 17 16 15 14 13 12 11

10 9 8 7 6 5 4 3 2 1 0

Tang.

M.

7Bi

1«8 140

TABLE XIII. LOGARITHMIC MNES,

165C^

M.

~0 1

2 3 4 5 6 7 8 9

]0 II 12 13 14 15 16 17 13 19

20 21 22 23 24 25 26 27 23 29

30 31 32 33 34 35 36 37 38 39

40 41 42 43 44 45 46 47 43 49

50 51 52 53 54 55 56 57 53 59 60

M.

Sine.

9.333675 .334182 .334637 .335192 .335697 .336201 .3S6704 .337207 .337709 .333210

9. .33 37 11 .339211 .33971 1 .390210 .390703 .391206 .391703 .392199 .392695 .393191

9.393635 ..394179 .394673 .395166 .395653 ..3961.50 .395641 .397132 .397621 .398111

9.398600 .399038 .399575 .400062 .400549 .401035 .401520 .402005 .402439 .402972

9.403455 .403938 .404420 .404901 .405382 .405362 .406341 .406320 .407299 .407777

9.403254 .408731 .409207 .409682 .410157 .410632 .411106 .411579 .412052 .412524 .412996

Cosine.

D. 1".

8.44 8.43 8.42 8.41 8.40 8.-39 8.38 3.37 3.36 8.35

8.34 8.-33 8.32 8.31 8.30 8.29 8.28 8.27 8.26 8.25

8.24 8.2:3 8.22 8.21 8.20 8.19 8.18 8.17 8.16 8.15

8.14 8.13 8.12 8.11 8.10 8.09 8.08 8.07 8.06 8.05

8.04 8.03 8.02 8.01 8.00 7.99 7.93 7.97 7.96 7.96

7.95 r.94 7.93 7.92 7.91 7.90 7.89 7.83 7.87 7.86

Cosine.

9.9869C4 .936873 .936841 .986809 .986778 .986746 .986714 .986633 .986651 .936619

9.9S6587 .986555 .986523 .936491 .936459 .936427 .936.395 .986-363 .986-331 .986299

9.9=6266 .986234 .986202 .986169 .9361.37 .986104 .936072 .936039 .986007 .93.5974

9.98.5942 ,985909 .935876 .935843 .985811 .985773 .985745 .985712 .985679 .935646

9.985613 .985580 .98.5547 .98-5514 .98-5480 .935447 .935414 .985381 .98-5347 .985314

9.935230 .935247 .93-5213 .985130 .985146 .935113 .935079 .935045 .93501 1 .934978 .934944

Sine.

D. 1".

.53 .53 .53 .53 .53 .53 .53 .53 .53 .53

.53 .53 .53 .53 .53 ..54 .54 .54 .54 .54

.54 .54 M .54 .54 ..54 .54 .54 .54 .54

.54 .55 ..55 ..55 .55 .55 .55 .55

.-55 .55 .55 .55 .55 .55 ..56 .56 .56 .56

.56 .56 .56 .56 .5f M .56 ..56 .56 .56

D. 1".

Tang.

9.396771 .397309 .397846 .393333 .398919 .399455 399990 .400524 .401058 .401591

9.402124 .402656 .403187 .403718 .404249 .404778 .405308 .405836 .406364 .406392

9.407419 .407945 .408471 .408996 .409521 .410045 .410.569 .411092 .411615 .412137

9.4126.53 .413179 .413699 .414219 .414738 .415257 .415775 .416293 .416810 .417-326

9.417842 .4183-58 .418873 .419337 .419901 .420415 .420927 421440 4219-52 .422463

9.422974 .423434 .423993 .424503 .425011 .425519 .426027 .426-534 .427041 .427.547 .428052

Cotang.

D. 1".

8.96 8.96 8.95 8.94 8.93 8.92 8.91 8.90 8.89 8.88

8.87 8. 86 8.85 8.84 8.83 8.82 8.81 8.80 8.79 8.78

8.77 8.76 8.75 8.75 8.74 8.73 8.72 8.71 8.70 8.69

8.63 8.67 8.66 8.65 8.65 8.64 8.63 8.62 8.61 8.60

8.59

8.58 8.57 8.56 8.56 8.-55 8.-54 8.53 8.52 8.51

8.50 8.49 8.49 8.48 8.47 8.46 8.45 8.44 8.43 8.43

D. 1".

Cotang

M.

60

0.603229

.602691

59

.602154

58

.601617

57

.601081

56

.600545

55

.600010

54

.599476

53

.593942

52

.598409

51

0.597376

50

.597344

49

.596313

48

.596232

47

.595751

46

.595222

45

.594692

44

.5941&4

43

.5936.36

42

.593103

41

0.592531

40

.5920.55

39

.591529

38

.591004

37

.590479

36

.589955

35

.539431

34

.588908

33

.583385

32

.587863

31

0.537342

30

.586821

29

.586301

28

.535781

27

.585262

26

.534743

25

.584225

24

.583707

23

..583190

22

.582674

21

0.582158

20

.581642

19

.581127

18

.-580613

17

.580099

16

.579535

15

..579073

14

.578560

13

.578043

12

.577537

11

0.577026

10

.576516

9

.576007

8

.57.5497

7

.574989

6

.574481

5

.573973

4

.573466

3

.572959

2

.572453

1

.571948

0 M.

Tang.

1040

T«i

COSINES, TANGENTS, AND COTANGENTS.

189

M.

0 1

2 3 4 5 6 7

Sine.

9.412996 .413467 .413933 .414408 .414S78 .415347 .415815 .416283 .416751 .417217

D.l"

10

11

12

13

14

15

16

17

18

19

20 21 22 23 24 25 26 27 28 29

30

31

32

33

.34

35

36

37

38

39

40

41

42

43

44

45

46

47

4S

49

50 51

52 53

54 55 56

57 58

ro

60

9.417634 .418150 .418615 .419079 .419544 .420007 .420470 .420933 .421395 .421857

9.422318 .422773 .4232.33 .423697 .424156 .424615 .425073 .425530 .425987 .426443

9.426899 .427354 .427809 .428263 .428717 .429170 .429623 .430075 .430.527 .430978

9.431429 .431879 .4.32329 .432778 .433226 .433675 .434122 .434569 .435016 .435462

9.43.5903 .436353 .436793 .437242 .437636 .438129 .43^572 .439014 .439456 .439397 .440338

Cosine.

7.85 7.84 7.84 7.83 7.82 7.S1 7.80 7.79 7.78 7.77

7.76 7.75 7.75 7.74 7.73 7.72 7.71 7.70 7.69 7.68

7.67 7.67 7.66 7.65 7.6-4 7.63 7.62 7.61 7.61 7.60

7.59 7.58 7.57 7.56 7.55 7.55 7.53 7.52 7.52 7.51

7.50 7.49 7.49 7.48 7.47 7.46 7.45 7.44 7.44 7.43

7.42

7.41

7.40

7.40

7.39

7.38

7.37

7.36

7 36

7.35

D. 1".

9.984944 .984910 .984876 .934842 .984308 .984774 .934740 .934706 .934672 .934638

9.984603 .984569 .984535 .984500 .984466 .984432 .934397 .934363 .984328 .934294

9.934259 .934224 .934190 .934155 .984120 .984085 .984050 .984015 .933931 .983946

9.9S3911 .983875 .933840 .933805 .983770 .933735 .983700 .983664 .983629 .983594

9.983553 .933523 .983487 .9834.52 .983416 .983381 .983345 .983309 .98.3273 .983238

M. Cosine. I D. 1".

9.98.3202 .983166 .983130 .983094 .983058 .933022 .982936 .982950 .932914 .932378 .982342

Tang.

.56

.57 .57

.57 .57 .57 .57 .57 .57 .57

.57 .57 .57 .57

.57 .57

.58 .58 .58 .58

.58 .58 .58 .58 .58 .58 .53 .53 .53 .58

.58 .58 .59 .59 .59 .59 .59 .59 .59 .59

59 .59 .59 .59 .59 .59 ..59 .60 .60 .60

.60 .60 .60 .60 .60 .60 .60 .60 .60 .60

9.428052 .428558 .429062 .429566 .430070 .430573 .431075 .431577 .432079 .432580

9.433080 .433580 .434080 .434579 .435078 .435576 .436073 .436570 .437067

Sine.

D. 1".

.437563

9.438059 .4335.54 .439048 .439543 .440036 .440529 .441022 .441514 .442006 .442497

9.442988 .443479 .443968 .444458 .444947 .445435 .445923 .446411 .446898 .447384

9.447870 .443356 .443841 .449326 .449810 .450294 .4.50777 .451260 .451743 .452225

9.452706 .453187 ,453668 .4.54148 .4.54628 .455107 .455586 .456064 .456542 .457019 .457496

D.r

Cotang.

8.42

8.41

8.40

8.39

8.38

8.38

8.37

8.36

8.35

8.34

8.33 8.33

8.32 8.31 8.30 8.29

8.28 8.28 8.27 8.26

8.25

8.24 8.24 8.23 8.22 8.21 8.20 8.20 8.19 8.18

8.17 8.16 8.16 8.15 8.14 8.13 8.13 8.12 8.11 8.10

8.09 8.09

8.08 8.07 8.06 8.06 8.05 8.04 8.03 8.03

8.02

8.01

8.00

8.00

7.99

7.98

7.97

7.97

7.96

7.95

M.

0.571948 .571442 .570933 .570434 .569930 .569427 .568925 .563423 .567921 .567420

0.566920 .566420 .565920 .565421 .564922 .564424 .563927 .5^3430 .562933 ,562437

0.561941 .561446

.560952 .560457 .559964 .5.59471

.556978 .558486 .557994 .557.503

0.5.57012 .556521 .556032 .555542 .555053 .554565 .554077 .553589 .553102 .552616

0.552130

60

59 58 57 56 55 54 53 52 51

.fc)0

Cotang.

D. 1".

1644

.551159 .550674 .550190 .549706 .549223 .543740 .543257 .547775

0.547294 .546313 .546332 .545852 .545372 .544893 .544414 .543936 .543458 .542981 .542.504

Tang.

50 49 43 47 46 45 44 43 42 41

40 39 33 37 36 35 34 33 32 31

30 29 28 27 26 25 24 23 22 21

20 19 18 17 16 15 14 13 12 11

10 9 8 7 6 5 4 3 2 1 _0^

M.

105°

7*0

190

160

TABLE Xlll. LOGARITHMIC SINES,

163f

M.

0 1 2 3

4 5 6 7 8 9

10 11 12 13 14 15 16 17 IS 19

20 21 22 23 24 25 26 27 23 29

30 3! 32 33 31 35 3G 37 33 39

40 41 42 43 44 45 46 47 43 49

50 51 52 53 54 55 56 57 53 59 60

M.

Sine.

9.440333 .440778 .441213 .4416.53 .442096 ,442535 .442973 .41.3410 .443347 .444231

9.444720 .445155 .445590 .446025 .4464-59 .446393 .447326 .447759 .443191 .443623

9.4490.54 .449435 .449915 450345 .450775 .451204 .451632 .4.52060 .452483 .4.52915

9.4.53342 .453763 .451194 .454619 .45.5044 .45.5469 .455393 .4.56316 .456739 .457162

9.457534 .453006 .453427 .453S4S .459263 .4.59633 .460103 .460527 .460946 .461364

9.461782 .462199 .462616 .463932 .463448 .463864 .454279 .464694 .465103 .465522 .465935

Cosine.

D 1".

7.34 7.33 7.32 7.31 7.31 7.30 7.29 7.23 7.27 7.27

7.26 7.25 7.24 7.24 7.23 7.22 7.21 7.20 7.20 7.19

7.18 7.17 7.17 7.16 7.15 .14 .13 .13 .12 .11

7. 7.

7. 7. 7.

7.10 7.10 7.09 7.08 7.07 7.07 7.06 7.05 7.04 7.04

7.03 7.02 7.01 7.01 7.00 6.99 6.98 6.98 6.97 6.96

6.96 6.95 6.94 6.93 6.93 6.92 6.91 6.90 6.90 6.S9

Cosine.

9.982842 .982305 .982769 .9327.33 .982696 .932660 .9326^4 .9»25'^7 .982551 .982514

9.9S2477 .932441 .982404 .932367 .932331 .982294 .9322.57 .932220 .982183 .982146

9.9>2109 .932072 .9820.35 .931998 .981961 .931924 .9818^6 .981849 .931812 .981774

9.931737 .931700 .931662 .931625 .981587 .931549 .931512 .981474 .931436 .981399

9.981361 .981323 .931235 .931247 .931209 .931171 .9311.33 .931095 .931057 .981019

9.980931 .930942 .930904 .930366 .930827 .930789 .930750 .930712 .930673 .930635 .980.596

D. 1". I Sine.

D. 1".

.60 .60 .61 .61 .61 .61 .61 .61 .61 .61

.61 .61 .61 .61 .61 .61 .61 .62 .62 .62

.62 .62 .62 62 .62 .62 .62 .62 .62 .62

.62 .62 .63 .63 .63 .63 .63 .63 .63 .63

.63 .63 .63 .63

.63 .63 .63 .64 .64 .64

.64 .64 .64 .64 .64 .64 .64 .64 .64 .64

Tang.

9.4574,16 .457973 .453449 .453925 .459400 .459875 .460.349 .460323 .461297 .461770

9.462242 .462715 .463b:6 .463658 .464128 .464.599 .46.5069 .465539 .466008 .466477

9.4R6945 .467413 .4678^0 .468347 .463314 .469280 .469746 .470211 .470676 .471141

9.471605 .472069 .472.532 .472995 .473457 .473919 .474381 .474342 .475303 .475763

9.476223 .476633 .477142 .477601 .478059 .473517 .478975 .479432 .479839 .430345

9.480301 .431257 .431712 .432167 .482621 .483075 .433.529 .433932 .434435 .434837 .435339

D. 1". Cotang.

D. 1".

7.94 7.91 7.93 7.92 7.91 7.91 7.90 7.89 7.83 7.83

7.87 7.>6 7.86 7.85 7.84 7. S3 7.83 7. 82 7.^1 7.81

7.30 7.79 7.78 7.73 7.77 7.76 7.76 7.7o 7.74 7.74

7.73 7.72 7.71 7.71 7.70 7.69 7.69 7.63 7.67 7.67

7.66 7.65 7.65 7.64 7.63 7.63 7.62 7.61 7.61 7.60

7.59 7. .59 7.53 7.57 7.57 7. .56 7.55 7.55 7.54 7.53

D. 1".

Cotang.

0.542504 .542027 .541.551 .541075 .540600 .540125 ..539651 .539177 .538703 ..533230

0.537758

.5372^5

.5.36314

.5.36;M2

.535372

.535401 '

.534931

.15.34461

.533992

.533523

0.533055 .532587 .5.32120 .5316.53 .531186 .530720 .530254 .529739 ..529324 .528859

0.523395 .527931 .527463 .527005 .526-543 .526031 .52.5619 .525153 .524697 .524237

0.523777 .523317 ..522353 .522399 ..521941 ..521433 .521025 .520.563 .520111 .519655

0.519199 .518743 .518283 .517833 .517379 .516925 .516471 .516018 .515565 .515113 .514661

Tang.

^060

73^

COSINES,

TANGENTS, AND COTANGENTS.

191

M.

a 6

7 8 9

in 11

12 13 14 1-3 16 17 18 19

20 21 22 23

24 25 26 27 2S 23

30

31

32

33

34

35

36

37

SS

39

40

41

42

43

44

4',

46

47

4S

49

50 51

Sine.

9.465935 .466348 .466761 .467173 .4675S5 .467996 .463407 .463317 .469227 .469637

9.470046 .470455 .470363 .471271 .471679 .472036 .472492 .472393 .473301 .473710

9.474115 .474519 .474923 .475327 .475730 .476133 .476.536 .476933 .477310 .477741

9.478142 .478542 .478942 .479342 .479741 .430140 .430539 .480937 .431334 .431731

•9.432128 .432525 .432921 .483316 .483712 .484107 .434501 .434395 .435239 .485632

9.436075 .436467

D 1". I Cosine. D- 1". Tang.

52

.436S60

53

.437251

54

.437643

55

.483034

56

.433424

57

.488314

53

.439204

59

.489593

60

.439932

M.

Cosine.

6 83 6.88 6.87 6.86 6.85 6.85 6.84 6.83 6.83 6.82

6.81

6.81

6.80

6.79

6.78

6.78

6.77

6.76

6.76

6.75

6.74 6.74 6.73 6.72 6.72 6.71 6.70 6.69 6.69 6.63

6.67 6.67 6.66 6.65 6.65 6.64 6.63 6.63 6.62 6.61

6.61 6.60 6.59 6.59

6.57 6.57 6.56 6.55 6.55

6.-54 6.. 54 6.53 6.52 6.52 6.51 6.50 6.50 6.49 6.48

9.950596 .930553 .930519 .930430 .980412 .980403 .930364 .930325 .930236 .930247

9.980208 .930169 .980130 ,930091 .980052 .980012 .979973 .979934 .979395 .979855

9.979316 .979776 .979737 .979697 .979653 .979613 .979579 .979539 .979499 .979459

9.979420 .979330 .979310 .979300 .979260 .979220 .979130 .979140 .979100 .979059

9.979019 .978979 .978939 .978898 .978353 .978317 .978777 .973737 .978696 .978055

9.978615 .978574 .978533 .978493 .978452 .973411 .978370 .978329 .978233 .978217 .973206

D. 1"

D. 1". I Sine

9.485339

.485791 .436242 .4'^6693 .487143 .437593 .483043 .488492 .483941 .489390

9.439833 .490236 .490733 .491180 .491627 1 .492073 .492519 .492965 .493110 .493354

9.494299 .494743 .495136 .495630 .496073 .496515 .496957 497399 .497841 .493232

9.493722 .499163 .499603 .500042 .500431 .500920 .5013.59 .501797 ..502235 .502672

9.503109 50.3546 503932 .504418 .504354 .505239 .50.5724 .506159 ..506593 .507027

9.507460 .507893 .503326 .503759 .509191 .509622 .5100.54 .510435 .510916 .511346 .511776

Cotang.

D. 1". I Cotang.

7.53 7.52 7.51

7.51 7.50 7. .50 7.49

7.43 7.43 7.47

7.46 7.46 7.45 7.44 7.44 7.43 7.43 7.42 7.41 7.41

7.40

7.39

7.39 .

7.33

7.33

7.37

7.36

7.36

7.35

7.34

7.-34 7.33 7.33 7.32 7.31 7.31 7.30 7.30 7.29 7.23

7.23 7.27 7.27 7.26 7.25 7.25 7.24 7.24 7.23 7.23

7.22 7.21 7.21 7.20 7.20 7.19 7.18 7.18 7.17 7.17

0.514661 .514209 .513758 .513307 .512357 .512407 .5119.57 .511503 .5110.59 .510610

0.510162 .509714 .509267 .503320 .505373 .507927 .507431 .507035 .506590 .506146

0.505701 .505257 .504314 .504370 .50-3927 .503435 .50-3043 .502601 .5021-59 .501718

0.501278 .500^37 .500397 .499958 .499519 .499030 .493641 .493203 .497765 .497328

0.496391 .496454 .496018 .495532 .495146 .494711 .494276 .493341 .493407 .492973

M.

60

59 53 57 56

D. 1".

Ci492540 .492107 .491674 .491211 .490309 .490373 .4899 16 .439515 .489034 .483654 ,438224

54 53

50 49 43 47 46 45 44 43 42 41

40

39

33

37 I

36

35

34

33

32

31

30 29 28 27 26 25 24 23 22 21

20 19 18 17 16 15 14 13 12 11

10 9

8 7 0

Tang.

lor^

4 3 2 1 0

M.

7a«

192

183

TABLE XIII. LOGARITHMIC SINES,

161<;

M.

0 1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 13 19

20 21 22 23 24 25 26 27 23 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 44 45 46 47 43 49

50 51 52 53 54 55 56 57 53 59 60

M.

Sine.

9.4S9932 .490371 .490759 .491147 .491535 .491922 .492303 .492695 .493031 .493466

9.493351 .494236 .494621 .495005 .49.!;333 .495772 .496154 .496.537 .496919 .497301

9.497632 .493064 .493444 .493325 .499214 .499534 .499963 .500342 .500721 .501099

9.. 50 14 76 .5015.54

..50-^231 ..502607 .502934 .503360 .5037.3.J .504110 .504435 .504560

9. .505234 .505603 ..505931 ..506354 ..506727 .507099 .507471 .507343 ..503214 .503535

9.503956 .509326 .509696 .510065 .510434 .510303 .511172 .511540 .511907 .512275 .512642

C:«ine.

D. 1".

6.43 6A7 6.46 6.46 6.45 6.45 6.44 6.43 6.43 6.42

6.41 6.41 6.40 6.39 6.. 39 6. .33 6.33 6..37 6.36 6.36

6.35 6.34 6.3^4 6.33 6.33 6.32 6.31 6.31 6.30 6.30

6.29 6.23 6.23 6.27 6.27 6.26 6.25 6.25 6.24 6.24

6.23 6.22 6.22 6.21 6.21 6.20 6.19 6.19 6.13 6.13

6.17 6.16 6.16 6.15 6.15 6.14 6.14 6.13 6.12 6.12

D. 1".

Cosine.

9.973206 .973165 .973124 .973033 .973042 .973001 .977959 .977913 .977377 .977835

9.977794 .977752 .977711 .977669 .977623 .977536 .977^544 .977503 .977461 .977419

9.977377 .977335 .977293 .977251 .977209 .977167 .977125 .977033 .977041 976999

9.976957 .976914 .976372 .976330 .976737 .976745 .976702 .976660 .976617 .976574

9.976532 .976439 .976446 .976404 .976:361 .976313 .976275 .976232 .976139 .976146

9.976103 .976060 .976017 .975974 .975930 .975357 .975344 .975300 .975757 .975714 ■975670

Sine.

D. 1".

.63 .69 .69 .69 .69 .69 .69 .69 .69 .69

.69 .69 .69 .69 .69 .69 .70 .70 .70 .70

.70 .70 .70 .70 .70 .70 .70 .70 .70 .70

.70 .71 .71 .71 .71 .71 .71 .71 .71 .71

.71 .71

.71 .71 .71 .72 .72 .72 .72 .72

.72 .72 .72 .72 .72 .72 .72 .72 .72 .72

D. 1".

Tang.

9.511776 .512206 .512635 .513064 513493 .513921 .514349 .514777 .515204 .515631

9.516057 .516434 .516910 .517.335 .517761 .513156 .515810 .519034 .5194.53 .519382

9.520305 .520723 .521 151 .521573 ..521995 .522417 .522333 .523259 .52.3630 .524100

9.524-520 .524940 .525359 .525778 .526197 ..526615 .527033 .527451 .527863 .528285

9.525702 .-529119 ..529.535 ..529951 .5.30-366 ..5-30781 ..531196 ..531611 .53202-5 .5-32439

9.-532353 .533266 .5.33679 .534092 .534-504 .53^916 .53.5323 .535739 .-5361.50 .-5-36561 .5-36972

Cotang.

D. 1".

7.16 7.16 7.15 7.14 7.14 7.13 7.13 7.12 7.12 7.11

7.10 7.10 7.09 7.09 7.03 7.03 7.07 7.07 7.06 7.05

7.05 7.04 7.04 7.03 7.03 7.02 7.02 7.01 7.01 7.00

6.99 6.99 6.93 6.98 6.97 6.97 6.96 6.96 6.G5 6.95

6.94 6.94 6.93 6.93 6.92 6.91 6.91 6.90 6.90 6.89

6.39 6.33 6.83 6.87 6.87 6.86 6.86 6.85 6. 85 6.34

D. 1".

Cotang.

0.438224 .437794 .437365 .456936 .486507 .456079 .435651 .435223 .434796 .434369

0.48-3943 .433516 .45-3090 .452665 .452239 .431514 .481.390 .430966 .430.542 .430113

0.479695 .479272

.478349 .473427 .478005 .477553 .477162 .476741 .476320 .475900

0.475450 .475060 .474641 .474222 .47-3303 .473355 .472967 .472;!^ 9 .472132 .471715

0.47129S .47033! .470465 .470049 .4696:34 .469219 .465504 .463389 .467975 .467561

0.467147 .466734 .466321 .465908 .465496 .465034 .464672 .464261 .46-33^50 .46:34:39 .463023

Tang

M.

1085

7J'

COSINES, TANGENTS, AND C0TANC4ENTS.

193

160C

M.

0 1

2 3

4 5 6

7 8 9

10 11 12 13 14 lo 16 17 IS 19

20 21 22 23 24 25 26 27 28 29

30 31 32 33 34 35 36 37 38 39

40 41

42

43 44

45 46 47 48 49

50 51 52 53 51 55 56 57 5S 59 60

M.

Sine.

D. 1".

9.512642 .513009 .513375 .513741 .514107 .514472 .514837 .515202 .515566 .515930

9.516294 .516657 .517020

.517745 .518107 .518463 .513829 .519190 .519551

9.519911 .520271 .520631 .520990 .521349 .521707 .522066 .522424 .522781 .52:3133

9.523495 .523352 .524203 .524564 .524920 .525275 .525630 .525934 ..526339 .526693

9.527046 .527400 .527753 .523105 .523453 .523310 .529161 .529513 .529364 .530215

9.530r565 .530915 .531265 .531614 .531963 .532312 .532661 .533009 .533357 .533701 .531052

Cosine.

Cosine.

6.11 6,11 6.10 6.09 6.09 6.03 6.03 6.07 6.07 6.06

6.05 6.05 6.04 6.01 6.03 6.03 6.02 6.02 6.01 6.00

6.00 5.99 5.99 5.93 5.98 5.97 5.97 5.96 5.95 5.95

5.94 5.94 5.93 5.93 5.92 5.92 5.91 5.90 5.90 5.89

5.89

5.88 5.88 5.87 5.87 .5.86 5.86 5.85 5.85 5.84

5.33

5.82 5.82 5.81 5.81 5.30 5.30 5.79 5.79

D. 1".

9.975670 .975627 .975533 .975539 .975496 .975452 .975403 .975365 .975321 .975277

9.975233 .975189 .975145 .975101 .975057 ,975013 .974969 .974925 .974880 .974336

9.974792 .974748 .974703 .974659 .974614 .974570 .974525 .974481 .974436 .974391

9.974347 .974302 .974257 .974212 .974167 .974122 .974077 .974032 .973937 .973942

9.973397 .973852 .973307 .973761 ,973716 .973671 .973625 .973530 .973535 .973489

9.973444 .973393 .973352 .973307 .973261 .973215 .973169 .973124 .973078 .973032 .972936

.73 .73

Tang.

D. 1".

Sine.

.73 .73 .73 .73 .73 .73

.73 .73 .73 .73 .73 .74 .74 .74 .74 .74

.74

.74

.74 .74 .74 .74 .74 .74 .74 .75

.75 .75

.75 .75 .75

.75 .75 .75 .75 .75

.75 .75 .75 .75 .76 .76 .76 .76 .76 .76

.76 .76 .76 .76

.76 •.76 .76 .76

.77 .77

9.536972 .537382 .537792 ,533202 .53861 1 .539020 .539429 .539837 .540245

D. 1"

.0

40653

9.541061 ,541463 .541875 .542231 .542638 .543094 .543499 .543905 .544310 ,544715

9.545119

,545524 .545928 ,546331 .546735 ,547138 .547540 .547943 .548345 ,548747

9.. 549 149 .549550 ..549951 ,550352 .550752 .551153 .551552 .551952 .5523:51 .552750

9.553149 .553548 .553946 .554344 .554741 .555139 .555536 .555933 .556329 .556725

9.5.57121 .557^17 .557913 ..558303 .558703 ..559097 .559491 .559335 .560279 .560673 ..561066

6.84 6.33 6.83 6.82 6.82 6.81 6.81 6.80 6.80 6.79

6.79 6.78 6.78 6.77 6.77 6.76 6.76 6.75 6.75 6.74

6.74 6.73 6.73 6.72 6.72 6.71 6.71 6.70 6.70 6.69

6.69 6.68 6.63 6.67 6.67 6.67 6.66 6.66 6.65 6.65

6.64 6.64 6.63 6.63 6.62 6.62 6.61 6.61 6.60 6.60

6.59 6.59 6.59 6.58 6.58 6.57 6.57 6.56 6.56

D. 1". Cotang.

Cotang.

0.463023 .462618 .462203 .461798 .461339 .460980 .460571 .460163 ,459755 .459347

0.458939 .458532 ,458125 .457719 .457312 .4.56906 .456501 .4.56095 .455690 .455285

0.454881 .454476 .4.54072 .4536P9 .453265 .452362 .452460 ,452057 .451655 ,451253

0.450351 .450450 .450049 .449643 .449248 .448847 .443443 ,443018 .447649 .447250

0.446351 ,446452 ,446054 ,445656 .445259 ,444861 .444464 .441067 .443671 .443275

0.442379 .442483 .442037 .441692 .441297 ,440903 ,440509 .440115 .439721 .439327 .433934

M.

60 59 53 57 56 55 34 53 52 51

50 49 48 47 46 45 44 43 42 41

40 39 33 37 36 35 34 33 32 31

30 29 23 27 26 25 24 23 22 21

20 19 18 17 16 15 14 13 12 11

10 9 8 7 6 5 4 3 2 1 0

D. 1".

Tang.

M.

1090

7©:

194

TABLE XIII.

LOGARITHMIC SINES,

159<J

M.

0 1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 IS 19

20 21 22 23 24 25 26 27 23 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 44 45 46 47 4S 49

50 51 52 53 54 55 56 57 58 59 60

M.

Sine.

9.534052 ..5-34399 .534745 .53.5092 .53.5438 .535783 .536129 .536474 .536318 .537163

9.537507 .537851 .533194 .538538 .533880 .539223 ..5.39.565 .539907 .540249 .540590

9.540931 .541272 .541613 ..541953 .542293 .5426.32 .542971 .543310 .543649 .543987

9.544325 .544663 .545000 545338 .545674 .546011 .546347 ..546633 .547019 .547354

9.547639

.548024 .543359 .543693 ..549027 .549360 .549693 .5.50026 .5.50359 .550692

9. .55 1024 .551356 .551687 ..552018 .552349 .552630 .5.53010 .55.3341 .553670 .554000 .554329

Cosine.

D. 1".

5.78 5.73 5.77 5.77 5-. 76 5.76 5.75 5.75 5.74 5.74

5.73 5.73 5.72 5.71 5.71 5.70 5.70 5.69 5.69 5.68

5.63 5.67 5.67 5.66 5.66 5.65 5.65 5.64 5.64 5.63

5.63 5.62 5.62 5.61 5.61 5.60 5.60 5.59 5.59 5.58

5.58 5.57 5.57 5.56 5.56 5.55 5.55 5.55 5.54 5.54

5.53 5.53 5.52 5.52 5.51 5.51 5.50 5.50 5.49 5.49

D. 1' .

Cosine.

9.972986 .972940 .972394 .972348 .972302 .972755 .972709 .972663 .972617 .972570

9.972524 .972478 .972431 .972335 .972333 .972291 .972245 .972193 .972151 .972105

9.972053 .972011 .971964 .971917 .971870 .971323 .971776 .971729 .971632 .971635

9.971588 .971.540 .971493 .971446 .971398 .971351 .971303 .9712.56 ,971203 .971161

9.971113 .971066 .971018 .970970 .970922 .970874 .970827 .970779 .970731 .970633

9.970635 ,970586 .970538 .970490 .970442 .970394 .970345 .970297 .970249 .970200 .970152

Sine.

D. 1".

.77 .77 .77 .77 .77 .77 .77 .77 .77 .77

.77 .77 .73 .78 .78 .78 .78 .78 .78 .78

.78 .78 .78 .73 .78 .78 .78 .79 .79 .79

.79 .79 .79 .79 .79 .79 .79 .79 .79 .79

.79 .80 .80 .80 .80 .80 .80 .80 .80 .80

.80 .80 .80 .80 .80 .81 .81 .81 .81 .81

D. 1".

Tang.

9.561066 .561459 .561851 .562244 .562636 .563023 .563419 .563311 .564202 .564593

9.564933 .565373 .565763 .566153 .566542 .566932 .567320 .567709 .563093 .563486

9.563373 ..569261 .569643 .570035 .570422 .570309 .571195 .571531 .571967 .572352

9.572733 .573123 .573507 .573392 ,574276 .574660 .575044 .575427 .575310 .576193

9.576576 .576959 .5773-11 .577723 .578104 .578486 .578367 .579243 .579629 .530009

9.580339 .580769 .581149

.581523 .531907 .532236 .532665 .533044 .533422 .533300 .584177

Cotang.

D. 1".

6.55 6.54 6.. 54 6.54 6.53 6.53 6.52 6.52 6.51 6.51

6.. 50 6.50 6..50 6.49 6.49 6.48 6.48 6.47 6.47 6.46

6.46 6.46 6.45 6.45 6.44 6.44 6.43 6.43 6.43 6.42

6.42 6.41 6.41 6.40 6.40 6.40 6.39 6.39 6.38 6.33

6.37 6.37 6.37 6.36 6.36 6.35 6.35 6.34 6.34 6.34

6.33 6.33 6.32 6.32 6.32 6.31 6.31 6.30 6.30 6.30

D. 1".

Cotang.

0.438934

.4.33541 .433149 ,437756 .437364 .436972 .436.-5S1 .436139 .435793 .435407

0.43.5017 .434627 .434237 .4.33847 .4.33453 .4.33068 .4.32680 .432291 .431902 .431514

0.431127 .430739 .430352 .429965 .429578 .429191 .428805 .428419 .423033 .427648

0.427262

.426377 .426493 .426103 .425724 .425340 .424956 .424573 .424190 .423307

0.423424 .423041 .422659 .422277 .421896 .421514

-.421133 .420752 .420371 .419991

0.419611 .419231 .418351 .418472 .413093 .417714 .417335 .416956 .416578 .416200 .415823

Tang.

IIOO

603

COSINES, TANGENTS, AND COTANGENTS.

1580

M.

Sine.

0 1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18 19

20 21 22 23 24 25 26 27 28 29

30 31 32 33 34 35 36 37 38 39

40 41 42 43 44 45 46 47 4S 49

50 51 52 53 54 55 56 57 53 59 60

9.554329 .554653 .55411^7 .555315 .555643

. .555971 .556299 .r 56626 .556953 .557280

9.557606 .557932

..558253 .55858 ! .5.58909 .5592:34 .559558 .559883 .560207 .560531

9.560855 ..561178 .561501 .561824 ..562146

D. 1''.

.0

62468 .562790 .563112 .563433 .563755

9.564075 .564396 .564716 .565036 .565356 ..565676 .565995 ..566314 ..566632 ..566951

9.567269 .567587 .567904 .568222 .568539 .568856 .56917^ .569438 ..569804 .570120

9.570435 .570751 .571066 ..571.3S0 .571695 .572009 ,572323 572636 572950 .573263 ..573575

Cosine.

D. 1".

5.48 5.48 5.47 5.47 5.46 5.46 5.45 5.45 5.44 5.44

5.44

5.43 5.43 5.42 5.42 5.41 5.41 5.40 5.40 5.39

5.39 5.38 5.33 5.37 5.37 5.37 5.36 5.36 5.35 5.-35

5.34 5.33 5.33 5.32 5.32 5.32 5.31 5.31 5.30

5.. 30 5.29 5.29 5.28 5.28 5.28 5.27 5.27 5.26

5.25 5.24 5.24 5.24 5.23 5.23 5.22 5.22 5.21

9.970152 .970103 .970055 .970006 .969957 .969909 .969'-60 .969811 .969762 .969714

9.969665 .969616 .969567 .969518 .969469 .969420 ,969370 .969321 .969272 ,969223

9.969173 ,969124 .969075 .969025 .968976 .968926 .968877 .968827 .968777 .968728

9.96S678 .968628 .968578 .968523 .968479 .968429 .968379 .963329 .963278 .963228

9.968178 .968128 .963078 .963027 .967977 .967927 .967876 .967826 .967775 .967725

9.967674 .967624 .967573 .967.522 .967471 .967421 .967370 .967319 .967268 .967217 .967166

M. I Cosine. I D. 1".

Tang.

D. 1".

Sine.

.81 .81 ,81 .81 81 .81 .81 .81 .81 ,81

,82 .82 .82 .82 .82 .82 .82 .82 .82 .82

.82 .82 .82 .82 .83 ,83 .83 ,83 ,83 ,83

.83

,83 ,83 .83 .83 .83 .83 .83 .84 .84

84 .84 .84 .84 .84 .84 .81 .84 .84 .84

.84 .84 .85 .85 .85 .85 .85 .85 .85

9.584177 .584555 .584932 ..585309 .585686 .586062 .536439 .5%815 .587190 .587566

9.587941 .588316 .588691 ..589066 .589440 .589814 .590188 .590562 .590935 .591308

9.591681 .592054 ,592426 .592799 .593171 .593.542 .593914 .594285 ,594656 ,595027

9.595393 ,595768 .596138

..596508 .596878 ..597247 I .597616 I .597985 .598354 .598722

9.599091 .599459 .599827 .600194 .600.562 .600929 .601296 .601663 .602029 .602395

9.602761 .603127 .603493 .603858 .604223 .604583 .601953 ,605317 .605682 .606046 .606410

Cotaiig. M.

D. 1". Cotang.

6.29 6.29 6.28 0.28 6.28 6.27 6.27 6.26 6.26 6.26

6.25 6.25 6.24 6.24 6.24 6.23 6.23 6.22 6.22 6.22

6.21 6.21 6.20 6,20 6.20 6.19 6.19 6.18 6.18 6.18

6.17 6.17 6.16 6.16 6.16 6.15 6.15 6.15 6.14 6.14

6.13 6.13 6.13 6.12 6.12 6.12 6.11 6,11 6.10 6.10

6.10

6.09 6.09 6.09 6.08 6.03 6.07 6.07 6.07 6.06

0. 41.5^23 .415445 .41.5068 .414691 .414314 .413938 .413561 .413185 .412810 ,412434

0.412059 .411684 ,411309 ,410934 .410560 .410186 .409812 .409438 .409065 .408692

0.408319 .407946 .407574 .407201 .406829 .406458 .406086 .405715 .405344 .404973

0.404602 .404232 .403^62 .4034'..2 .403122 .402753 .402384 .402015 .401646 .401278

0.400909 .400541 ,400173 .399806 .399433 .399071 .398704 .398337 .397971 .397605

0.397239 .396873 .396507 .396142 .395777 .395412 .395047 ,394683 .394318 .393954 .393590

1). 1".

Tang. M

60 59

68

56

53

52 51

50 49 48 47 46 45 44 43 42 41

40 39 38 37 36 35 34 33 32 31

30 29 28 27 26 25 24 23 22 21

20 19 18 17 16 15 14 13 12 11

10 9 8 7 6 5 4 3 2 1 0

111

68^

*-W9rr^^9^m^\^^ww-r #^f .A^V^^tV/jT^^AV

196

933

TABLE XIII. LOGARITHMIC SI^'ES,

157'

M.

0 1 2 3

4 5 6

7 8 9

10 II 12 13 14 15 16 17 13 19

20 21 22 23 24 25 26 27 2S 29

30 31 32 33 34 3-5 36 37 33 39

40 41 42 43 44 45 46 47 4S 49

50 51 52 53 54 55 58 57 53 59 60

Sine.

9.573575 .573333 .574200 .574512 .574S24 .575136 .57.5147 .575753 .576069 .576379

9.576639 .576999 .577309 .577613 .577927 .573236 .573545 .573853 .579162 .579470

9.579777 .530035 .530392 .530699 .531005 .531312 .531613 .531924 .532229 .532535

9.532340 .533145 .533449 .533754 .581053 .534361 ..531665 .534963 ..535272 .535574

9. 535S77 ..536179

. .536132 .536733 ,537035 .537336 .537633 .537939 .583239 .533590

9.533390 .539190 .539439 .539789 .590033 .590337 .593636 .500934 .591232 .591530 .591373

D. 1". Cosine.

M. Cosine. D. 1".

5.21 5.2( 5.2C 5.20 5,19 5.19 5.13 5.13 5.17 5.17

5.17 5.16 5.16 5. 15 5.15 5.14 5.14 5.14 5.13 5.13

5.12 5.12 5.11 5.11 5.11 5.10 5.10 5.09 5.09 5.09

5.03 5.03 5.07 5.07 5.06 5.06 5.06 5.05 5.05 5.04

5.04 5.04 5.03 5.03 5.02 5.02 5.01 5.01 5.01 5.00

5.00 4.99 4.99 4.99 4.93 4.93 4.97 4.97 4.97 4.96

9.967166 .967115 .967064 .967013 .966961 .966910 .966359 .966303 .966756 .966705

9.966653 .966602 .966550 .966499 .966447 .966395 .966iH .966292 .966240 .966133

9.966136 .966035 .966933 .965981 .965929 .965376 .965324 .965772 .965720 .965663

9.96.5615 .965563 .965511 .965453 .96^5406 .965a53

-.965301 .965243 .965195 .965143

9.965090 .965037 .961934 .964931 .961379 .964326 .961773 .961720 .961666 .961613

9.961560 .964507 .964454 .964400 .964:347 .961294 .961240 .961187 .964133 .961030 .961026

D. 1".

Sine.

.85 .85 .85 .85 .85 .35 .86 .86 .86 .36

.86 .86 .86 .86 .86 .86 .56 .86 .86 .86

.87

.87 .87 .37 .87 .87 .87 .87 .87 .87

.87 .37 .87 .87 .83 .83 .83 .88 .83 .83

.83 .83 .83 .83 .83 .33 .33 .83 .89 .39

.89 .89 .89 .89 .39 .39 .89 .89 .89 .89

Tang.

D. 1".

9.605110 .606773 .607137 .607.500 .6' 17363 .603225 .6034533 .603950 .609312 .609674

9.610036 .610397 .610759 .611120 .611430 .611341 .6122)1 .612561 .612921 .613231

9.613641 .614000 .6143.59 .614713 .615077 .6154.35 .615793 .616151 .616509 .616367

9.617224 .617.532 .617939 .613295 .613652 .619033 .619364 .619720 .620076 .623432

9.620737 .621142 .621497 .621352 .622207 .622561 .622915 .623269 .623623 .623976

9.624330 .624633 .6250.36 .62-5333 .625741 .626093 .626445 .626797 .627149 .627-501 .627352

Cotang.

D. 1".

6.06 6.06 6.05 6.05 6.05 6.04 6.04 6.03 6.03 6.03

6.02 6.02 6.02 6.01 6.01 6.01 6.00 6.00 6.00 5.99

5.99 5.93 5.93 5.93 5.97 5.97 5.97 5.96 5.96 5.96

5.95 5.95 5.95 5.94 5.94 5.94 5.93 5.93 5.93 5.92

5.92 5.92 5.91 5.91 5.91 5.90 5.90 5.90 5.89 5.89

5.89 5.83 5.83 5.83 5.87 5.87 5.87 5.86 5.86 5.86

D. 1".

Cotang.

0.393590 .393227 .392363 .392500 .392137 .391775 .391412 ..3910-50 .390633 .390326

0.339964 .339603 .339241 .333330 .333520 .338159 .337799 .337439 .387079 .336719

0.336359 ..336000 .33.5641 .33-5232 .334923 .384565 .384207 .33:3349 .333491 .333133

0.332776 .332413 .332061 .331705 .331:343 .330992 .330636 .330230 .379924 .379563

0.379213 .378353 .373503 .373143 .377793 .377439 .377035 .376731 .376:377 .376024

0.375670 .375317 .374964 .374612 .3742.59 .373907 .373555 .373203 .372351 .372499 .372148

Tang.

iia^j

67"

COSINES, TANGENTS, AND COTANGENTS.

830

\91

15G3

i.

Sine.

0

9.591878

1

.59217G

2

..592-173

3

.592770

4

.5'.):{I67

5

..^.93363

6

.n936.j9

7

.593955

8

.594251

9

.591547

D. 1".

10 11 12 13 14 15 16 17 18 19

20 21 22 23 24 25 2G 27 28 29

30 31 32 33 31 35 36 37 33 39 j

40

4r

42 43 44 45 46 47 4S 49

50

51

52

53

54

55

56

57

53

59

60

ri3o

9.594842 .595137 ..59.5432 ..595727 .596021 .596315 .5966; )9 .59(5903 .597196 .597490

9.. 597783 .593075 .598363 .593660 .598952 .599244 .599.536 .599827 .600118 .600409

9.600700 .601)990 .6012-0 .601570 .601860 .692 150 .602439 .602728 .603017 .603305

9.603594 .603382 .6:14170 .604457 .604715 .605032 .605319 .605606 .605892 .606179

9.60r.'65 .606751 .607036 .607322 .607607 .607892 .608177 .60-461 .603745 .609029 .609313

Cosine.

4.96 4.95 4.95 4.95 4.94 4.94 4.93 4.93 4.93 4.92

4.92

4.91

4.91

4.91

4.90

4.90

4.89

4.89

4.S9

4.88

4.83 4.83 4.87 4.S7 4.86 4.86 4.86 4.85 4.85 4.S4

4.84 4.84 4.83 4.83 4.83 4. 82 4.82 4.81 4.81 4.81

4.80 4.80 4.79 4.79 4.79 4.73 4.78 4.7.S 4.77 4.77

4.76 4.76 4.76 4.75 4.75 4.74 4.74 4.74 4 73 4.73

D. 1".

Cosine.

9.964026 .963972 .963919 .963365 .963811 .9(;37.j7 .963704 .9636.30 .963596 .963:542

9.9634-13 .963434 .963379 .963325 .96327!

'.■^3217 .9631ftJ .9631(13 .96;',(l.54 .962999

9.962945 .962390 .962336 .962781 .932727 .962672 .9G2;i7 .962.562 .962.503 -.962453

9.962398 .962343 .962288 .962233 .962178 .962123 .962067 .962012 .9619.57 .961902

9.961846 .961791 .9617.35 .961630 .961624 .961569 .961513 .9614.53 .961402 .961346

9.961290 .961235 .961179 .96112! .961007 .961011 .960955 .96:)V.)9 .960343 .96II7S6 .96)730

Sine.

D. 1"

Tang.

.89 .89 .90 .90 .90 .90 .90 .90 .90 .90

.90 .90 .90 .90 .90 .911 .91 .91 .91 .91

.91 .91 .91 .91 .91 .91 .91 .91 .91 .92

.92 .92

.92 .92 .92 .92 .92 .92 .'M .92

.92 .92 .92 .93 .93 .93 .93 .93 .93 .93

.93 .93 .93 .93 .93 .93 .93 .94 .94 .94

1). 1"

9.627852 .628203 ,<^28554 .623905 .629255 .629606 .629956 .630306 .630656 .631005

9.631355 .631704 .6.32053 .6321(12 .632750 .633099 .633447 .633795 .634143 .634490

9.634333 .635185 .635532 .635379 .636226 .636572 .636919 .637265 .637611 .637956

9.638302 .633617 .633992 .639337 .639632 .640027 .610371 .640716 .641060 .6414(04

9.641747 .642091 .642434 .642777 .643120 .643463 .643306 .644148 .644490 .644332

9.645174 .64-5516 .645S57 .646199 .616540 .646361 .647222 .647562 .617903 .643243 .643583

D. 1",

5.85 5.85 5.85 5. 84 5.54 5. 84 5.83 5.83 5.83 5.82

5.82 5.82 5.81 5.81 5.81 5.80 5.80 5.80 5.79 5.79

5.79

5.78 5.78 5.78

5.77 5.77

5.77

Cotang.

.76 6

o./

5.75 5.75 5.75 5.74 5.74 5.74 5.73 5.73 73

Cotang.

y,

5.73 5.72 5.72 5.72 5.71 5.71 5.71 5.70 5.70 5.70

5.69 5.69 5.69 5.69 5.68 5.68 5.68 5.67 5.67 5.67

-||

0.372148 .371797 .371446 .371095 .370745 .370394 .370044 .369694 .369344 .363995

0.36S645 .363296 .367947 .367593 .367250 .366901 .366553 .366205 .365857 .365510

0.365162 .364>15 .364468 .364121 .363774 .363423 .363081 .3627.35 .362339 .362044

0.361698 .361353 .361008 .360663 .360318 .3.59973 .359629 .359234 .358940 .358596

0.358253 .357909

D. 1".

.357223

.356380 .356537 ,356194 ,355852 .355510 .355163

0.354826 .3.544^4 .3.54143 .3533! II .353460 .353119 .352778 .352433 .352097 .351757 .351417

M.

GO .59 53 57 56 55 54 53 52 51

50

49

48 47 46 45 44 43 42 41

40 39 38 37 36 35 34 33 32 31

30 29 23 27 26 2-5 24 23 22 21

20 19 13 17 16 15 14 13 12 11

10

9

6 5 4 3 2 1 0

Tang. M.

(QQC

198

TABLE Xlll. LOGARITHMIC SINES,

155<.

M.

M.

isine.

0

9.609313

I

.609597

2

.609S80

3

.610164

4

.61/)147

5

.610729

6

.611012

7

.611294

8

.611576

9

.611853

10

9.612140

11

.612421

12

.612702

13

.612933

14

.613264

15

.61.3545

16

.613325

17

.614105

13

.614385

19

.614665

2D

9.614944

21

.615223

22

.615.502

23

.615731

24

.616030

25

.616333

26

.616516

27

.616394

23

.617172

29

.617450

30

9.617727

31

.618004

32

.618231

33

.618.553

34

.613334

35

.619110

36

.619336

37

.619662

38

.619933

39

.620213

40

9.620133

41

.620763

42

.621033

43

.621313

44

.621537

45

.621861

46

.6221.35

47

.622409

48

.622632

49

.622956

50

9.623229

51

.623502

52

.6^3774

53

.624047

54

.624319

55

.624591

56

.624363

57

.625135

58

.625406

59

.625677

60

.625948

D. 1".

Cosine.

4.73 4.72 4.72 4.72 4.71 4.71 4.71 4.70 4.70 4.69

4.69 4.69 4.63 4.63 4.63 4.67 4.67 4.67 4.66 4.66

4.65 4.65 4.65 4.64 4.61 4.64 4.63 4.63 4.63 4.62

4.62 4.61 4.61 4.61 4.60 4.60 4.60 4.59 4.59 4.59

4.53 4.53 4.53 4.57 4..57 4..57 4.56 4.56 4.56 4.55

4.55 4.54 4.54 4.. 54 4.53 4.53 4.53 4.52 4..52 4,52

D. 1".

Cosine.

D. 1".

9.9607.30 .960674 .960618 .96)561 .960505 .960443 .960392 .960335 .96)279 .960222

9. 96 T 165 .960109 .96)052 .959995 .959933 .9.59332 .959325 .9.59768 .959711 .959654

9 959596 ,959539 ,959432 ,959425 ,959363 ,959310 .9.59253 .959195 .9.59133 .959030

9.959023 .953965 .958908 .9533.50 .953792 .9587.34 .953677 .953619 .953.561 .953503

9.958445 .953337 .953329 .953271 .9.53213 .9.53154 .9.58096 .958038 .957979 .957921

9.957863 .957804 .957746 .957637 .957623 ,957570 ,957511 .957452 .957393 .9573a5 ,957276

Sine.

,94 ,94

.94 ,94 ,94 .94 .94 .94 .94 .94

.95 .95 .95 .95 ,95 .95 .95 .95 ,95 .95

.95 .95 .95 .95 .96 .96 ,96 .96 ,96 ,96

.96 .96 .98 .96 .96 .96 .96 .97 .97 ,97

.97 .97 .97 .97 .97 .97 ,97 .97 ,97 .97

.97 .93 .93 .93 ,98 .98 .93 .93 ,98 .98

D. 1".

Tang,

9.648583 .643923 .649263 .649002 .649942 .650231 .650620 .650959 .651297 .651636

9.651974 .652312 .652650 .652933 .653326 .653663 .6.54000 ,654337 .654674 .655011

9.655343 .65.5634 .656020 .656356 .656692 .6.57023 .657364 .657699 ,653034 ,653369

9.653704 .659039 ,6.59373 .6-59703 .660042 .660376 .660710 .661043 .661-377 .661710

9.662043 .662376 .662709 .663042 .663375 .663707 ,664039 .664371 .664703 .665035

9.66-5366 .66.5693 .666029 .666360 ,666691 ,667021 .6673^52 .667682 .663013 .663343 ,668673

Cotang.

D. 1'.

5.67 5.66 5.66 5.66 5.65 5.65 5.65 5.64 5.64 5.64

5.64 5.63 5.63 5.63 5.62 5.62 5.62 5.62 5.61 5.61

5.61 5.61 5.60 5.60 5.60 5. .59 5.59 5.59 5.58 5.58

5.-58 5.58 5.57 5.57 5.57 5.56 5.56 5.56 5.. 56 5.55

5.55 5.55 5.54 5.54 5.54 5.54 5.53 5.-53 5.-53 5.53

5.52 5.52 5, .52 5.51 5.51 5.51 5.51 5.50 5.50 5.50

D. 1".

Cotang,

0.351417 .351077 .350737 .350398 .350058 .349719 .349380 .349041 ,343703 .348364

0.343026 .347638 .347a50 .347012 .346674 .346337 .346000 .345663 ,345326 .344939

0.344652 .344316 ,34.3930 ,343644 ,313308 ,342972 .31^636 .342301 .341966 .341631

0.3-11296 .340961 ..340627 ,340292 .3-39953 ,a39624 ,339290 .333957 ,a33623 ,333290

0.337957 ,.337624 .337291 .336958 ,3-36625 .336293 .3.35961 .335629 ,3-35297 .33496-.

0.3-34634 .334302 .333971 .-333640 .-3-33309 .332979 .332643 .332318 .331987 .3316.57 ,331327

Tang.

1140

690

COSINES, TANGENTS, AND COTANGENTS.

199

154ta

M. Sine.

D. 1".

0 1

2 3 4 5 6 7 8 9

10 11 12 13

14 15 16 17 13 19

20 21 22 23 24 25 26 27 28 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 44 45 46 47 48 49

50 51

52 53 54 55 56 57 58 59 60

M.

9.625948 .626219 .626490 .62(3760 .627030 .627300 .627570 .627840 .62S109 .628378

9.628647 .623916 .629185 ,629453 .620721 .629989 .630257 .630524 .630792 .631059

9.631326 .631593 .631859 .632125 .632392 .6326.58 .632923 .633189 .633454 .633719

9.633934 .634249 .634514 .634778 .635042 .635306 .635570 .635834 .636097 .636360

9.636623 .636886 .637148 .637411 .637673 .637935 .638197 .638458 .638720 .63S081

9.639242 .639503 .639764 .610f/24 .640284 .frl0544 .640304 .641064 .641324 .&11583 .641842

Cosine.

4.51

4.51

4.51

4.50

4.50

4.50

4.49

4.49

4.49

4.48

4.48 4.48 4.47 4.47 4.47 4.46 4.46 4.46 4.45 4.45

4.45 4.44 4.44 4.44 4.43 4.43 4.43 4.42 4.42 4.42

4.41

4.41

4.41

4.40

4.40

4.40

4.39

4.39

4.39

4.33

4.38 4.38 4.37 4.37 4.37 4.36 4.36 4.36 4.35 4.35

4.35 4.34 4.34 4.34 4.33 4.33 433 4.32 4.32 4.32

D. 1".

Cosine.

9.957276 .957217 .957158 .957099 .957040 .956981 .956921 .956^62 .956S03 .956744

9. 9566.84 .956625 .956566 .956506 .956447 .956.387 .956327 .956268 .956208 .956148

9.956089 .956029 .955969 .95.5909 .955849 .955789 .955729 .955669 .955609 .955548

9.955488 .955428 .955363 .955307 .95.5247 .955186 .955126 .955065 .955005 .954944

9.954883 .954823 .954762 .954701 .954640 .954.579 .9.54518 .954457 .954396 .954335

9.954274 .954213 .954152 .954090 .954029 .953968 .953906 .953845 .953783 .953722 .953660

Sine.

D 1".

Tang.

D. 1".

.98 .98 .98 .98 .99 .99 .99 .99 .99 .99

.99

.99

.99

.99

.99

.99

.99

.99 1.00 1.00

1.00 1.00

1. 00 1.00 1.00 1.00 1.00 1.00 1.00 1.00

1.00 1.01 1.01 1.01 1.01 1.01 1.01 1.01 1.01 1.01

1.01 1.01 1.01 1.01 1.02 1.02 1.02 1.02 1.02 1.02

1.02 1.02 1.02 1.02 1.02 1.02 1.02 1.03 1.03 1.03

D. 1".

9.66-:673 .669002 .669332 .669661 .669991 .670320 .670649 .670977 .671306 .671635

9.671963 .672291 .672619 .672947 .673274 .673602 .673929 .674257 .674.584 .674911

9.675237 .675564 .675890 .676217 .676543 .676869 .677194 .677520 .677846 .678171

9.678496

.678821 .679146 .679471 .679795 .680120 .680444 .680768 .681092 .681416

9.681740 .682063 .682387 .682710 .683033 .683356 .683679 .684001 .684324 .634646

9.684968 .685290 .68.5612 .6S5934 .686255 .686577 .686898 .687219 687540 687861 .688182

Gotang.

Cotang.

5.50 5.49 5.49 5.49 5.49 5.48 5.48 5.48 5.47 5.47

5.47 5.47 5.46 5.46 6.46 5.46 5.45 5.45 5.45 5.45

5.44 5.44 5.44 5.44 5.43 5.43 5.43 5.42 5.42 5.42

5.42 5.41 5.41 5.41 5.41 5.40 5.40 5.40 5.40 5.39

5.39 5.39 5.39 5.38 5.38 5.38 5.33 5.37 6.37 6.37

5.37 6.36 5.36 5.36 5.36 5.35 6.35 5.35 6.35 5.35

J).V.

M.

0.331327 .330998 .330668 .330339 .330009 .3296^0 .329351 .329023 .328694 .328365

0.328037 .327709 .327381 .327053 .326726 .326398 .326071 .325743 .325416 .325089

0.324763 .324436 .324110 .323783 .323457 .323131 .322806 .322480 .322154 321829

0.321504 .321179 .320854 .320529 .320205 .319880 .319556 .319232 .318908 .318584

0.318260 .317937 .317613 .317290 .316967 .316644 .316321 .315999 ,315676 .315354

0.315032 .314710 .314388 .314066 .313745 .313423 .313102 .312781 ,312460 .312139 .311818

Tuc.

60 59 58 57 56 55 54 53 52 51

50 49 48 47 46 45 44 43 42 41

40 39 38 37 36 35 34 33 32 31

30 29 28 27 26 25 24 23 22 21

20 19 18 17 16 15 14 13 12 11

10 9 8 7 6 6 4 3 2 1 0

M.

1150

640

200

TABLE Xlll. LOGAKITHMIC SINES,

153>

M.

0 1 2 3

4 5 6 7 8 9

10 11 12 13 14 15 16 17 IS 19

20 21 22 23 21 2.-, 26 27 2S 29

.30 31 82 33 31 35 36 37 33 39

40 41

42 43 44 45

46 47 43 49

50 51 52 53 54 55 56 57 58 59 60

Sine.

9.641812 .642101 .642360 .64 26 IS .642877 .643135 .613393 .6136.50 .643908 .644165

9.641123 .614'J80 .644,(36 .645193 .615150 .645700 .64-5962 .646218 .646474 .646729

9.646984 .647210 .647194 .647749 .648004 .64S258 .648512 .643766 .649020 .649274

9.649527 .649781 .650:)34 .65y2s7 .650.539 .650792 .651044 .651297 .651549 .651800

9.6.520.52 .652304 .652555 .652806 .653057 .653.303 .653553 .653303 .6.54059 .654309

9.654553 .6.54303 .6.550-58 .6.55307 .655556 .655805 .656054 .656302 .656551 .656799 .657047

D. 1".

4.32 4.31 4.31 4.31 4.30 4.30 4.30 4 29 4.29 4.29

4.28 4.28 4.23 4.27 4.27 4.27 4.26 4.26 4.26 4.26

4.25 4.25 4.25 4.24 4.24 4.24 4.23 4.23 4.23 4.22

4.22 4.22 4.22 4^21 4.21 4.21 4.20 4.20 4.20 4.19

4.19 4.19 4.18 4.18 4.13 4.18 4.17 4.17 4.17 4.16

4.16 4.16 4.15 4.15 4.15 4.15 4.14 4.14 4.14 4.13

M.

1163

Cosine. D. 1"

Cosine.

9.953660 .953599 .953537 .95.3475 .9.53113 .953352 .953290 .953228 .9.53166 .953104

9.9.53042 .9.52980 .9-52918 .952855 .952793 .9.52731 .952669 .9.52606 .9-52.544 .952481

9.952419 .952356 .952234 .952231 .952168 .952106 .952043 .951980 .951917 .9518-54

9.951791 .951723 .951665 .951602 .951539 .951476 .951412 .951319 .9.J1286 .951222

9.951159 .951096 .9510-32 .9-50963 .950905 .9-50841 .9-50778 .950714 .9506-50 .950586

9.950522 .950453 .950394 .9.50330 .950266 .950202 .9-50133 .9.50074 .9.50010 .949945 .949381

Sine.

D. 1".

1.03 1.03 1.03 1.03 1.03 1.03 1.03 I 03 1.03 1.03

1.03 1.04 1.01 1.04 1.04 1.04 1.04 1.01 1.04 1.04

1.04 1.04 1.04 1.01 1.05 1.05 1.05 1.05 1.05 1.05

1.05 1.05 1.05 1.05 1.05 1.05 1.05 1.06 1.06 1.06

1.06 1.06 1.06 1.06 1.06 1.06 1.06 1.06 1.06 1.06

1.07 1.07 1.07 1.07 1.07 1.07 1.07 1.07 1.07 1.07

D. 1".

Tang.

9.688182 .638502 .633823 .639143 .639463 .639783 .690103 .690423 .69 1742 .6J1062

9.691-381 .6 J 1700 .692019 .692333 .692656 .692975 .693293 .693612 .693930 .694248

9.694566 .694833 .69-5201 .695518 .69-5336 .6961.53 .696470 .696787 .697103 .697420

9.697736 .6:)8053 .693369 .693635 .699001 .699316 .699632 .699947 .700263 .700578

9.700393 .701208 .701.523

.7018.37 .7021.52 .702466 .702781 .703095 .7034.^9 .703722

9.704036 .7043-50 .704663 .704976 .705290 .70560-3 .70.5916 .706228 .706541 .7063-54 .707166

Cotang.

D. 1".

5.34 5.34 5.34 5.34 5.-33 5.33 5.33 5.33 5.32 5.32

5.32 5.-32 5.31 5.31 5.31 5.31 5.30 5.-30 .5.. 30 5.30

5.29 5.29 5.29 5.29 5.29 5.23 5.28 5.23

5.27

5.27 5.27 5.27 5.26 5.26 5.26 5.26 5.26 5.25 5.25

5.25 5.25 5.24

5.24

5.24 .5.24 5.23 5.23 5.23

5.23 5.22 5.22 5.22 5.22 5.22 5.21 5 21 5.21 5.21

D. 1".

Cotang.

M.

0.311813

60

.311498

59

.311177

58

.310S57

57

.310-5.37

56

.310217

55

.309397

54

..309577

53

J30925S

52

.308938

51

0..305619

50

.308300

49

.307981

48

.307662

47

.307344

46

.307025

45

..306707

44

.306338

43

.306070

42

.305752

41

0.30.5434

40

.305117

39

.304799

33

.304482

37

.301164

36

.303347

35

303530

34

.303213

33

.3 12397

32

.302580

31

0.302264

30

.301947

29

.3)1631

28

.301315

27

.30f)999

26

..3011634

25

.300363

24

.300053

23

.299737

22

.299422

21

0.299107

20

.298792

19

.298477

18

.293163

17

.297848

16

.297534

15

.297219

14

.296905

13

.296.591

12

.296278

11

0.295964

10

.295650

9

.295337

8

.295r.<24

7

.294710

6

.294-397

5

.294034

4

.293772

3

.293459

2

.293146

1

.2923.34

0 M.

Tang.

e3<

COSINES, TANGENTS, AND COTANGENTS.

201

153-

M.

-I-

Siiie.

10 II 12 13 14 15 16 17 13 19

20 21 22 23 24 2.3 26 27 23 29

30 31 32 33

36

37 33 39

10 II 12 13 14 15 16 17 IS 19

50 51 52 53 54 55 56 57 5S 6C

D. 1".

9.637017 .657293 .637542 .657790 .653037 .6.58234 .6.53531 .653773 639025 .659271

G 659317 .639763 .660009 .660255 .660501 .660746 .660991 .66123G .661-131 .6t)1726

9.661970 .6;2214 .6521.59 .662703 .662916 .663190 .663433 .663677 .663920 .664163

9.661106 .664643 .661391 .665133 .665375 .665617 .66.5859 .666100 .666342 .666533

9.666324 .667065 ,667305 .667346 .667736 .663027 .663267 .663506 .663746 .663936

9.669225 .669464 .669703 .669942 .670131 .670419 ,670653 .670396 .6711.34 .671372 .671609

4.13 4.13 4.12 4.12 4.12 4.12 4.11 4.11 4.11 4.10

4.10 4.10 4.10 4.09 4.09 4.09 4.03 4.03 4.03 4.03

4.07 4.07

4.07 4.05 4.06 4.06 4.05 4.03 4.03 4.05

4.04 4.04 4.04 4.03 4.03 4.03 4.03 4.02 4.02 4.02

4.01 4.01 4.01 4.01 4.00 4.00 4.00 3.99 3.99 399

3.99 3.93 3.9? 3.93 3.93 3.97 3.97 3.97 3.96 3.96

Cosiue.

D. 1"

9.919331 .919316 .949752 .919658 .949623 .949353 .949194 .919429 .949364 .949300

9.949235 .949170 .949105 .949040 .948975 .943910 .913345 ,943730 .943715 ,913650

9.943.531 .913319 .943454 .943338 .943323 ,913257 ,918192 .943126 .943060 .947995

9.947929 .947863 .947797 .947731 .947665 .917600 .947533 .917467 .917401 .947333

9.947269 .947203 .947136 .947070 .9170r)l .916937 .946371 .946304 .946733 ,916671

9,916604 .946533 .946471 .946404 .946337 .916270 ,946203 .946136 .916069 .916(02 .9439.35

1.07 1.07 1,07 1,03 1.03 1.03 1.03 1.03 1.03 1.03

1.03 1.03 1.03 1.03 1,03 1.08 1,09 1.09 1.09 1.09

1.09 1,09 1,09 1,09 1,09 1,09 1,09 1.09 1.09 1.10

1.10 1.10 1.10 1. 10 1.10 1.10 1. 10 l.IO 1. 10 1. 10

l.!0 1.11 1,11 l.ll 1.11 1,11 1.11 1.11 l.U 1.11

1.11 l.U 1.11 1.11 1.12 1.12 1.12 1.12 1.12 1 12

Tang.

9.707166 .707478 .707790 .703102 .703414 .703726 .709037 .709349 .709660 .709971

9.710232 .710593 .710304 .711215 ,71 1525 .711336 .712146 .712156 .712766 ,713076

9,71.3336 ,713696 ,714005 ,714314 ,714624 ,714933 ,71.5242 .715551 .715360 .716168

9,716477 ,716735 .717093 .717401 ,717709 ,713017 .718.325 ,718633 .713940 .719213

9.719.555 .719362 .720169 .720176 .720783 .721039 ,721396 .721702 ,722009 ,722315

9,722621 .722927 .723232 .723338 ,723344 ,724149 .7244.54 .724760 .725065 .723370 .725674

M. Cosine, D. 1", Sine, D, 1", Cotang, D, 1"

D. 1".

5.20 5.20 5.20 5,20 .5.20 5,19 5.19 5.19 5.19

5,13 5.18 5.18 5.13 5,17 5,17 5.17 5.17 .5,17 5,16

5,16 5,16 5.16 5.15 5.15 5.15 5.15 5.15 5.14 5.14

5.14 5.14 5.14 5.13 5,13 5,13 5.13 5.13 5.12 5.12

5.12 5.12 5.11 5.11 5.11 5.11 5.11 5.10 5.10 5.10

5.10 5.10 5.09 5.09 5.09 5.09 5.09 5,08 5,08 5.03

Cotang. M

0,292834 ,292522 ,292210 .291893 ,291536 ,291274 ,290963 .290651 .290340 ,290029

60 59 58 57 56 53 54 53 52 51

0.239718 .

50

.239407

49

.239096

48

.238785

47

.238475

46

.233164

45

.237854

44

.237514

43

.2372.34

42

.236924

41

0.2S6614

40

.236304

39

.235995

33

.235836

37

.285376

36

.235067

35

.234753

34

.234149

33

.281140

32

.233332

31

0.283523

30

.233215

29

.232907

23

.232.599

27

.232291

26

.231933

23

.231675

24

.231367

23

.231060

22

.230752

21

0.280445

20 '

.2301.33

19

.279331

13

,279324

17

,279217

16

.273911

15

,273604

14

.273293

13

,277991

12

.277635

11

0,277379

10

,277073

9

.276768

8

,276462

7

.276156

6

.275351

5

.275.546

4

.275240

3

.274935

2

.274630

1

.274326

0 M.

Tang.

1170

10

6a«

202

280

TABLE XIII. LOGARITHMIC SINES,

131

M.

0 I

2 3

4 5 6

7 8 9

10 II 12 13 14 15 16 17 13 19

20 21 22 23 24 25 26 27 23 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 44 45 46 47 48 49

50 51 52 53 54 55 56 57 53 59 60

Sine.

9.671609 .671847 .672034 .672321 .672553 .672795 .673032 .673263 .673505 .673741

9.673977 .674213 .674443 .674634 .674919 .675155 .675390 .67.5624 .67.5359 .676094

9.676323 .676.562 .676796 .677030 .6772&4 .677493 .677731 .677964 .678197 .673430

9.673663 .673395 .679123 .679360 .679.592 .679324 .630056 .630233 .630519 .630750

9.630932 .631213 .631443 .631674 .631905 .6321.35 .632365 .632595 .632325 .6S3055

9.633234 .633514 .633743 .633972 .634201 .634430 .634653 .634337 .63.S115 .63.5343 .635571

M. Cosine.

D. 1".

3.96 3.96 3.95 3.95 3,95 3 94 3,94 3.94 3.94 3.93

3.93 3.93 3.93 3.92 3.92 3.92 3.91 3.91 3.91 3.91

3.90 3.90 3.90 3.90

3. 39 3.89 3.89 3.83 3.83 3.33

3.83 3.87 3.87 3.37 3.37 3.86 3.86 3.86 3.86 3.85

3.85 3.35 3.34 3.84 3.84 3.84 3.83 3.33 3.33 3.83

3.32 3.82 3.82 3.82 3.81 3.81 3.81 3.80 3.80 3.80

D. 1".

Cosine.

9.94.5935

.945363 .945800 .945733 .945666 .945593 .94.5.531 .94.5464 .945396 .945323

9.94.5261 .945193 .945125 .945053 .944990 .944922 .944354 .944786 .944718 .9446.50

9.944.532 .944514 .944446 .944377 .944.309 .944241 .944172 .944104 .944036 .943967

9.943S99 .9433.30 .943761 .943693 .943624 .943555 .943436 .943417 .94.3343 .94.3279

9.943210 .943141 .94.3072 .943003 .9429-34 .942364 .942795 .942726 .942656 .942.587

9.942517 .942443 .942373 .942.308 .942239 .942169 .942099 .942029 .941959 .941839 .941819

Sine.

D. 1".

,12 ,12 ,12 ,12 ,12 ,12 ,12 ,13 ,13 ,13

,13 ,13 ,13 ,13 ,13 ,13 ,13 ,13 ,13 ,13

,14 ,14 ,14 ,14 ,14 14 ,14 ,14 14 14

14 14 15 15 15 15 15 15 15 15

15 15 15 15 15 16 16 16 16 16

16 16 16 16 16 16 16 17 17 17

D. 1".

Tang.

9.725674 .725979 .726234 .726538 .726392 ./27197 .727.501 .727805 .723109 .723412

9.723716 .729020 .729.323 .729626 .729929 .730233 .730535 .730338 .731141 .731444

9.731746 .732043 .732351 .732653 .732955 .733257 .733558 .733360 .734162 .734463

9.734764 .735066 .735367 .735663 .735969 .736269 .736570 .786370 ,737171 .737471

9.737771 .733071 .733371 .733671 .735971 .739271 .739570 .739370 .740169 .740468

9.740767 .741066 .741365 .741664 .741962 .742261 .742559 .742858 .743156 .743454 .743752

D, 1".

Cotang.

5.08 5.08 5.07 5.07 5.07 5.07 5.07 5.06 5.06 5.06

5.06 5.06 5.05 5.05 5.05 5.05 5.05 5.05 5.04 5.04

5.04 5.04 5.04 5.03 5.03 5.03 5.03 5.03 5.02 5.02

5.02 5.02 5.02 5.01 5.01 5.01 5.01 5.01 5.01 5.00

5.00 5.00 5.00 5.00 4.99 4.99 4.99 4.99 4.99 4.93

4.98 4.98 4.93 4.93 4.93 4.97 4.97 4.97 4.97 4.97

D. 1".

Cotang.

0.274326 .274021 .273716 .273412 .273103 .272303 .272499 .272195 .271891 .271588

0.271234 .270930 .270677 .270374 .270071 .269767 .269465 .269162 .263859 .268556

0.2632.54 .267952 .267649 .267347 .267045 .266743 .266442 .266140 .265833 .265537

0.2652.36 .264934 .261633 .264-332 .264031 .263731 .263430 .263130 .262,329 .262529

0.262229 .261929 .261629 .261329 .261029 .260729 .260430 .260130 .2.59331 .259532

0.259233 .253934 .2.58635 .258336 .253033 .257739 .257441 .257142 .2.56344 .2.56.546 .256243

Tang.

118'

COSINES, TANGENTS, AND COTANGENTS.

M

Sine.

0 1 2 3 4 5 6 7 8 9

!0 11 12 13 14 15 16 17 13 19

20 21 22 23 24 25 26 27 23 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 44 45 46 47 43 49

50 51 52 53 54 55 56 57 58 59 60

D. 1".

9.635371 .6S579'J .6S6027 .656254 .636432 .636709 .656936 .637163 .637339 .637616

9.657313 .653069 .633295 .655521 .633747 .655972 .659193 .6>9123 .6^9615 .659573

9.690095 .890323 .690543 .693772 .690996 .691220 .691444 .691665 .691892 .692115

9.692339 .692562 .692785 .693003 .693231 .693453 .693676 .693593 .694120 .694342

9.694.564 .694736 .69.5007 .695229 .695450 .69.5671 .695392 .696113 .696334 .696554

9.696775 .696995 .697215 .697435 .697654 .697874 .695094 .698313 .698532 .693751 .698970

Cosine.

D. 1".

M. Cosine.

3.80 3.79 3.79 3.79 3.79 3.78 3.78 3.78 3.73 3.77

3.77 3.77 3.77 3.76 3.76 3.76 3.76 3.75 3.75 3.75

3.75 3.74 3.74 3.74 3.74 3.73 3.73 3.73 3.73 3.72

3.72 3.72 3.72 3.71 3.71 3.71 3.71 3.70 3.70 3.70

3.70 3.69 3.69 3.69 3.69 3.63 3.63 3.63 3.63 3.67

3.67 3.67 3.67 3.66 3.66 3.66 3.66 3.65 3.65 3.65

9.941819 .911749 .941679 .911609 .941539 .941469 .941393 .941323 .941253 .941137

9.941117 .941046 .910975 ,940905 .940334 .940763 .940693 .940622 .940551 .940480

9.940409 .940333 .940267 .940196 .940125 .940054 .939982 .939911 .939340 .939768

9.939697 .939625 .9.395.54 .939482 .939410 .939339 .939267 .939195 .939123 .939052

9.935930 .935908 .933336 .933763 .933691 .935619 .933.547

.933475 .933402 .933330

9.9382.58 .933185 .933113 .933040 .937967 .937895 .937822 .937749 .937676 .937604 .937531

Tang.

D. 1".

Sine.

1.17 1.17 1.17 1.17 1.17 1.17 1.17 1.17 1.17 1.17

1.18 1.18

1.18 1.18 1.18 1.18 1.18 1.18 1.18 1.18

1.18 1.18 1.19 1.19 1.19 1.19 1.19 1.19 1.19 1.19

1.19 1.19 1.19 1.19 1.19 1.20 1.20 1.20 1.20 1.20

1.20 1.20 1.20 1.20 1 20 1.20 1.20 1.21 1.21 1.21

1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.22

D. 1".

9.743752 .744050 .744343 .744645 .744943 .745240 .74.5533 .74.5335 .746132 .746429

£. r46726 .747023 .747319 .747616 .747913 .748209 .748505 .748801 .749097 .749393

9.749639 .749935 .750281 .750576 .750872 .751167 .751462 .751757 .752052 .752347

9.752642 .7.52937 .753231 .753526 .753320 .754115 .754409 .754703 .754997 .755291

9.7.5.5585 .755373 .756172 .756165 .756759 .757052 .757345 .757633 .7.57931 .758224

9.753517 .758810 .759102 .759395 .759687 .759979 .760272 .760564 .760856 .761148 .761439

Cotang.

D. 1". I Cotang.

4.96 4.96 4.96 4.96 4.96 4.96 4.95 4.95 4.95 4.95

4.95 4.95 4.94 4.94 4.94 4.94 4.94 4.93 4.93 4.93

4.93 4.93 4.93 4.92 4.92 4.92 4.92 4.92 4.92 4.91

4.91 4.91 4.91 4.91 4.91 4.90 4.90 4.90 4.90 4.90

4.89 4.89 4.89 4.89 4.89 4.89 4.88 4.83 4.83 4.88

4.88 4.88 4.87 4.87 4.87 4.87 4.87 4.87 4.86 4.86

0.256243 .255950 .255652 .255355 .255057 .254760 .25-1462 .2.54165 .253363 .253571

0.253274 .252977 .2.52031 .252334 .252037 .251791 .251495 .251199 .250903 .250607

0.2.50311 .250015 .249719 .249424 .249123 .243833 .248538 .248243 .247943 .247653

0.247358 .247063 .246769 .246474 .246180 .24.5835 .245591 .245297 .24.5003 .244709

0.244415 .244122 .243325 .243535 .243241 .242948 .242655 .242362 .242069 .241776

0.241483 .241190 .240398 .240605 .240313 .240021 .239723 .239436 .2.39144 .238852 .238561

D. 1". Tang.

1190

60<

204

30^

TABLE ^'III. LOGARITHMIC SINES,

M.

0 1 2 3 4 5 6 7 8 9

10 II 12 13 14 15 16 17 18 19

20 21 22 2:5 24 25 26 27 28 29

30 31 32 33 34 35 36 37 33 39

40 41

42 43 44 45 46 47 43 49

50 51 52 53 54 55 56 57 53 59 60

M.

Sine.

D. 1".

9.693970 .699139 .699407 .699626 .699844 .700062 .700230 .700493 .700716 .700933

9.701151 .701363 .701.585 .701302 .702019 .702236 .702452 .702669 .702335 .703101

9.703317 .7()3533 .703749 .703664 .704179 .704395 .704610 .704S25 .705040 .705254

9.705469 .705633 .705398 .706112 .706326 .706.539 .706753 .706967 .707130 .707393

9.707606 .707819 .703032 .703245 .7034.33 .703670 .703832 .709094 .709306 .709518

9.709730 .709941 .710153 .710364 .710575 .710736 .710997 .711208 .711419 .711629 .711839

3.65 3.64 3.64 3.64 3.64 3.63 3.63 3.63 3.63 3.62

3.62 3.62 3.62 3.61 3.61 3.61 3.61 3.60 3.60 3.60

3.60 3.59 3.59 3.59 3. .59 3.59 3.58 3. .58 3.53 3.. 53

3.57 3.57 3.. 57 3.57 3.-56 3.56 3.56 3.56 3.55 3.55

3.55 3.55 3.54 3.54 3.54 3.54 3.54 3.53 3.53 3.53

3.53 3.52 3.52 3.52 3.52 3.51 3.51 3.51 3.51 3.51

Cosine. D, 1".

Cosine.

9.937531 .937453 .937.335 .937312 .937233 .937165 .937092 .937019 .936946 .936872

9.9.36799 .936725 .936652 .936578 .936.505 .936431 .936-357 .936284 .936210 .936136

9.936062 .935938 .935914 .9-3-5340 .935766 .935692 .935618 .9-35543 .935469 .935395

9.93.5320 .935246 .9-35171 .935097 .935022 .934943 .934873 .934793 .9-34723 .934649

9.934574 .9.34499 .934424 .934349 .934274 .934199 .9-34123 .934043 .93-3973 .933S98

9.93-3822 .933747 .933671 .933596 933520 933445 933369 933293 933217 .933141 .933066

D. 1".

Sine.

1.22 1.22 1.22 1.22 1.22 1.22 1.22 1.22 1.22 1.22

1.22 1.23 1.23 1.23 1.23 1.23 1.23 1.23 1.23 1.23

1.23

1.23 1.23 1.23 1.24 1.24 1.24 1.24 1.24 1.24

1.24 1.24 1.24 1.24 1.24 1.24 1.25 1.25 1.25 !.!.5

1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 I.2G 1.26

1.26 1.26 1.26 1.26 1.26 1.26 1.26 1.26 1.26 1.26

Tang.

D. 1".

9.761439 .761731 .762023 .762314 .762606 .762897 .763133 .76.3479 .763770 .764061

9.764.352 .764643 .764933 .765224 .765514 .765305 .766095 .766385 .766675 .766965

9.767255 .767.545 .7678.34 .768124 .768414 .768703 .763992 .769231 .769-571 .769560

9.770148 .770437 .770726 .771015 .771.303 .771592 .771830 .772163 .772457 .772745

9,7730-33 .773-321 .773608 .773896 .774184 .774471 .774759 .775046 .7753-33 .775621

9.775908 .776195 .776482 .776763 .777055 .777342 .777623 .777915 .773201 .773488 .778774

D. 1".

Cotang.

Cotang.

4.S6 4.86 4.S6 4.86 4.S6 4.85 4.85 4.85 4.85 4.85

4. 35 4.84 4.84 4.84 4.84 4.84 4.84 4.83 4.83 4.83

4.83 4.83 4.83

4.82 4.32 4.82 4.82 4.82 4.82 4.82

4.81 4.81 4.81 4.81 4.SI 4.81 4.80 4.80 4.S0 4.80

4.80 4.80 4. SO 4.79 4.79 4.79 4.79 4.79 4.79 4.78

4.78 4.78 4.78 4.78 4.78 4.78 4.77 4.77 4.77 4.77

D. 1".

0.238561 .238269 .237977 .237686 .237394 .237103 .236312 .2-36521 .236230 .235939

0.235643 .235357 .235067 .234776 .234486 .234195 .2339C5 .233615 .233325 .233035

0.232745 .232455 .232166 .231876 .231586 .231297 .231008 .230719 .230429 .230140

0.229S52 .229563 .229274 .228985 .223697 .228403 .228120 .227832 .2275-13 .227255

0.226967 .22G679 .226392 .226 1 ((4 .22.5316 .225.529 .22.5241 .224954 .224667 .224379

0.224092 .223305 .223513 .223232 .222945 .222658 .222372 .222035 .221799 .221512 .221226

Tang.

M.

60 59 58 57 56 55 54 53 62 51

50 49 43 47 46 45 44 43 42 41

40 39 33 37 36 35 34 33 32 31

30 29 28 27 26 25 24 23 22 21

20 19 IS 17 16 15 14 13 12 •1

10 9 8 7 6 5 4 3 2 I _0

M.

laoo

COSINES, TANGENTS, AND COTANGENTS.

20e

148=

Sine.

D. 1".

0 1 2 3

4 5 6

7 8 9

10 11 12 13 14

ir>

1(3 17 18 19

2(3 21 22 23 24 25 25 27 23 29

30 31 32 33 34 35 36 37 33 39

40

41

42

43

44

45

46

47

43

49

50 51 52 53 54 55 56 57 53 59 60

9 711839 .712050 .712260 .712469 .712679 ,712339 .713093 .713303 .713517 .713726

9.713935 .714144 .714352 .714561 .714769 .714978 .715186 .715394 .715602 .715309

9.716017 .716224 .716132 .710639 .716346 .7170.33 .717259 .717466 .717673 ,717879

9.7 1 8035 .71S291 .713497 .718703 .718909 .719114 .719320 .719525 .719730 .719935

9.720140 .720345 .720549 .720754 .720953 .721162 .721366 .721570 .721774 .721978

9.722181 .722335 .722588 .722791 .722994 .723197 .723400 .723603 .723305 .724007 .724210

Cosiiie. D. 1"

3.50 3.50 3.50 3.50 3.49 3.49 3.49 3.49 3.43 3.43

3.43 3.43 3.43 3.47 3.47 3.47 3.47 3.46 3.46 3.46

3.46 3.46 3.45 3.45 3.45 3.45 3.44 3.44 3.44 3.44

3.43 3.43 3.43 3.43 3.43 3.42 3.42 3.42 3 42 3.41

3.41 3.41 3.41 3.41 3.40 3.40 3.40 3.40 3.39 3.39

3.39 3.39 3.39 3.38 3.38 3.33 3.33 3.37 3.37 3.37

9.933006 .932990 .932914 .932833 .932762 .932685 .932609 .932533 .932457 .932330

9.932304 .932228 .932151 .932075 .931998 .931921 .931845 .931763 .931691 .931614

9.931537 .931460 .931333 .931306 .931229 .931152 .931075 .930993 .930921 .930343

9.930766 .930638 .930611 .930533 .930456 .930378 .930.300 .930223 .930145 .930067

9.929939 .929911 .929333 .929755 .929677 .929599 .929521 .929442 .929364 .929266

9.929207 .929129 .929050 .923972 .923393 .923315 .923736 .923657 .923573 .923499 .923420

Cosine. D, 1"

1.27 1.27 1.27 1.27

1.27 1.27 1.27 1.27 1.27 1.27

1.27 1.27 1.23

1.28 1.28 1.28 1.23 1.23 1.23 1.23

1.23 1.23 1.23 1.23 1.29 1.29 1.29 1.29 1.29 1.29

1.29 1.29 1.29 1.29 1.29 1.29 1.30 1.30 1.30 1.30

1.30 1.30 1,30 1.30 1.30 1.30 1.30 1.31 1.31 1.31

1.31 1.31 1.31 1.31 1.31 1.31 1.31 1.31 1.31 1.32

Sine

Tang.

9.778774 .779060 .779346 .779632 .779918 .7«0203 .780489 .780775 .731060 .781346

9.781631 .781916 .782201 .782186 .782771 .783056 .783341 .783626 .783910 .734195

9 784479 784764 785043 .785332 .785616 785900 .786184 .786463 .786752 .787036

9.737319 .787603

.787886 .783170 .783453 .783736 .789019 .789302 .789535 .7893C8

9.790151 .790434 .790716 .790999 .791281 .791563 .791846 .792128 .792410 .792692

9.792974 .793256 .793533 .793819 .794101 .794333 .794664 .794946 .795227 ,795508 .795739

D. 1",

D. 1"..

4.77 4.77 4.77 4.76 4.76 4.76 4.76 4.76 4.76 4.76

4.75 4.75 4.75 4.75 4.75 4.75 4.75 4.74 4.74 4.74

4.74 4.74 4.74 4.74 4.73 4.73 4.73 4.73 4.73 4.73

4.73 4.72 4.72 4.72 4.72 4.72 4.72 4.72 4.71 4.71

4.71 4.71 4.71 4.71 4.71 4.70 4.70 4.70 4.70 4.70

4.70 4.70 4.70 4.69 4.69 4.69 4.69 4.69 4.69 4.69

Cotang

Cotang.

0.221226 .220940 .220654 .220363 .220082 .219797 .219511 .219225 .218940 .218654

0.218369 218034 .217799 .217514 .217229 .216944 .216659 .216374 .216090 .215805

0.215521 .215236 .21 49-52 .214663 .214334 .214100 .21.3816 .213532 .213243 .212964

0.212681 .212397 .212114 .211830 .211547 211264 .210981 .210698 .210415 .210132

0.209849 .209566 .209284 .209001 .208719 .208437 .208154 .207872 .207590 .207308

0.207026 .206744 .206462 .206181 .205399 .205617 .20.3336 .205054 .204773 .204492 .204211

M.

60 59 58 57 56 55 54 53 52 51

50 49 43 47 46 45 44 43 42 41

40 39 33 37 36 35 34 33 32 31

30 29 28 27 26 25 24 23 22 21

20 19 18 17 16 15 14 13 12 11

10 9 8 7 6 5 4 3 2 1 0

D. 1",

Tang,

M

i»l^

5.>i^

206

33°

TABLE Xlil. LOGARITHMIC SINES,

M.

0 1 2 3 4 5 6 7

10 11 12 13 14 15 16 17 18 19

20 21 22 23 24 25 26 27 28 29

30 31 32 33 34 35 36 37 38 39

40 41 42 43 44 45 46 47 43 49

50 51 52 53 54 55 56 57 58 59 60

M.

l«20

Sine.

9.724210 .724412 .724614 .724S16 .725017 .725219 .725420 .725622 .725523 .726024

9.726225 .726426 .726626 .726327 .727027 .727228 .727423 .727623 .727823 .728027

9.72S227 .728427 .725626 .728325 .729024

.,_J29223 .729422 .729621 .729320 ,730018

9.730217 .730415 .730613 .730811 .731009 .731206 .731401 .731602 .731799 .731996

9.732193 .732390 .732537 .732784 .732930 .733177 .733373 .733569 .733765 .733961

9.7.34157 .734353 .734549 .734744 .734939 .735135 .735330 .735525 .735719 .735914 .736109

Cosine.

D. 1".

3.37 3.37 3.36 3.36 3.36 3.36 3.36 3.35 3.35 3.35

3.35 3.34 3.31 3.34 3.34 3.3i 3.33 3.33 3.33 3.33

3.33 3.32 3.32 3.32 3.32 3.31 3.31 3.31 3.31 3.31

3.30 3.30 3.30 3.30 3.30 3.29 3.29 3.29 3.29 3.28

3.28 3.28 3.28 3.28 3.27 3.27 3.27 3.27 3.27 3.26

3.26 3.26 3.26 3.26 3.25 3.25 3.25 3.25 3.25 3.24

D. 1".

Cosine.

9.928420

.923342 .928263 .923153 .923104 .925025 .927946 .927567 .927787 .927708

9.927629 .927549 .927470 .927390 .927310 .927231 .927151 .927071 .926991 .926911

9.926331 .926751 .926671 .926591 .926511 .926431 .926351 .926270 .926190 .926110

9.926029 .925949 .925563 .925733 .925707 .925626 .925545 .925465 .925334 .925303

9.925222 .925141 .925060 .924979 .924397 .924816 .924735 .924654 .924572 .924491

9.924409 .924328 .924246 .924164 .924083 .924001 .923919 .923837 .923755 .923673 .923-591

Sine.

D. 1".

1.32 1.32 1.32 1.32 1.32 1.32 L32 1.32 1.32 1.32

L32 1.33 1.33 1.33 1.33 .33 1.33 1.33 1.33 1.33

1.33 1.33 1.33 1.34 1.34 1.34 1.34 1.34 1.34 1.34

1.34 1.34 1.34 1.34 1.35 1.35 1.35 1.35 1.35 1.35

1.35 1.35 1.35 1.35 1.35 1.35 1.36 1.36 1.36 1.36

1.36 1.36 1.36 1.36 1.36 1.36 1.36 1.37 1.37 1.37

D. 1".

Tang.

9.7957S9 .796070 .796351 .796632 .796913 .797194 .797474 .797755 .798036 .798316

9.798596

.798877 .799157 .799437 .799717 .799997 .800277 .800557 .800336 .801116

9.801396 .801675 .801955 .802234 .602513 .802792 .803072 .803351 .803630 .803909

9.804187 .804466 ,804745 .805023 .805302 .805580 .805859 .806137 .806415 .806693

9.806971 .807249 .807527 .807805 .803033 .803361 .805633 .803916 .809193 .809471

9.809748 .810025 .810302 .810580 .810857 .811134 .811410 .811687 .811964 .812241 .812517

Cotang

D. 1",

4.63 4.68 4.68 4.68 4.68 4.63 4.68 4.68 4.67 4.67

4.67 4.67 4.67 4.67 4.67 4.66 4.66 4.66 4.66 4.66

4.66 4.66 4.66 4.65 4.65 4.65 4.65 4.65 4.65 465

4.65 4.64 4.64 4.64 4.64 4.64 4.64 4.64 4.64 4.63

4.63 4.63 4.63 4.63 4.63 4.63 4.63 4.62 4.62 4.62

4.62 4.62 4.62 4.62 4.62 4.61 4.61 4.61 4.61 4.61

D.l"

Cotang.

M.

0.204211

60

.203930

59

.203649

58

.203363

57

.203037

56

.202306

55

.202526

54

.202245

53

.201964

52

,201634

51

0.201404

50

.201123

49

.200843

48

.200563

47

.200283

46

.200003

45

.199723

44

.199413

43

.199164

42

.198884

41

0.195604

40

.19532.5

39

.195045

38

.197766

37

.197487

36

.197208

35

,196923

34

,196649

33

.196370

32

,196091

31

0.195813

30

.195534

29

,195255

28

,194977

27

,194698

26

.194420

25

,194141

24

.193363

23

.193555

22

.193307

21

0.193029

20

.192751

19

.192473

IS

.192195

17

.191917

16

.1916.39

15

.191362

14

.191084

13

.190807

12

.190529

11

0.190252

10

.189975

9

.189698

8

.189420

7

.189143

6

.188866

5

.188590

4

.188313

3

.188036

2

,187759

1

.187483

0

Tang

M.

COSINES, TANGENTS, AND COTANGENTS.

207

1*1:0

M

0

1

2 3

4 5 6

7 8 9

10 11 12 13 14 15 16 17 18 19

20 21 22 23 24 25 26 27 28 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 44 45 46 47 48 49

50 51 52 53 54 55 56 57 53 59 60

Sine.

D. 1".

9.736109 .736303 .736493 .736692 .736SS6 .737030 .737274 .737467 .737661 .737855

9.733043 .733241 .733434 .733627 .733320 .739013 .739206 .739393 .739590 .739783

9.739975 .740167 .740359 ,740550 .740742 .740934 .741125 .741316 .741508 .741699

9.741389 .742080 .742271 .742462 .742632 .742S42 .743033 .743233 .743413 .743602

9.743792 .743932 .744171 .744361 .744550 .744739 .744928 .745117 .745306 .745594

9.745633 .745371 .746060 .746248 .746436 .746624 .746812 .746999 .747187 .747374 .747562

M.

Cosine.

Cosine.

3.24 3.24 3.24 3.23 3.23 3.23 3.23 3.23 3.22 3.22

3.22 3.22 3.22 3.21 3.21 3.21 3.21 3.21 3.20 3.20

3.20 3.20 3.20 3.19 3.19 3.19 3.19 3.19 3.18 3.18

3.18 3.18 3.18 3.17 3.17 3.17 3.17 3.17 3.16 3.16

3.16 3.16 3.16 3.15 3.15 3.15 3.15 3.15 3.14 3.14

3.14 3.14 3.14 3.13 3.13 3.13 3.13 3.13 3.12 3.12

D. 1".

9.923591 .923509 .923427 .923345 .923263 .923181 .923093 .923016 .922933 .922351

9,922768 .922636 .922603 .922520 .922433 .9223.55 .922272 .9221S9 .922106 .922023

9.921940 .9218.57 .921774 .921691 .921607 .921524 .921441 .921357 .921274 .921190

9.921107 .921023 .920939 .920856 .920772 .9206S3 .920604 .920520 .920436 .920352

9.920268 .920184 ,920099 .920015 .919931 .919346 .919762 .919677 .919593 .919503

9.919424 .919339 .919254 .919169 .919035 .919000 .918915 .918830 .918745 .918659 .918574

Tang.

D. 1 '.

D. 1".

1.37 1.37 1.37 1.37 1.37 1.37 1.37 1.37 1.37 1.38

1.33 1.33 1.33 1.38 1.3S 1.38 1.38 1.38 1.33 1.33

1.39 1.39 1.39 1.39 1.39 1.39 1.39 1.39 1.39 1.39

1.39 1.39 1.40 1.40 1.40 1.40 1.40 1.40 1.40 1.40

1.40 1.40 1.40 1.41 1.41 1.41 1.41 1.41 1.41 1.41

1.41 1.41 1.41 1.41 1.42 1.42 1.42 1.42 1.42 1.42

Sine

9.312517 .812794 ,813070 .813347 .813023 .813399 .814176 .814452 .814728 .815004

9.815230 .815555 .815-31 .816107 .816382 .816653 .816933 .817209 .8174.34 .817759

9.818035 .818310 .818585 .818360 .819135 .819410 .819634 .8199.59 .820234 .820503

9.820783 .8210.57 .821332 .821606 .821880 .822154 .822429 .822703 .822977 .823251

9.823524

.823793 .824072 .824345 .824619 .824893 .825166 .825439 .82.5713 .825936

9.8262.59 .826532 .826305 .827078 .827351 .827624 .827897 .828170 .828442 .823715 .823987

Cotang.

4.61 4.61 4.61 4.61 4.60 4.00 4.60 4.60 '1. 60 4.60

4.60 4.60 4.59 4.^9 4.59 4.59 4.59 4.59 4.59 4.59

4.59 4..53 4.53 4.. 53 4.58 4.58 4.-53 4.53 4.58 4.58

4.57 4.-57 4.57 4.57 4.-57 4.57 4.57 4.57 4.57 4.56

4.56 4.56 4.56 4.56 4.56 4.56 4.56 4.56 4.. 55 4.55

4.55 4.55 4.55 4.55 4.55 4.55 4.55 4.54 4.54 4.54

0.187483 .187206 .106930 .186653 .186377 .186101 .1S5>24 .185543 .185272 .184996

0.184720 .184415 .134169 .183893 .183618 .183342 .183067 .182791 .182516 .182241

0.181965 .181690 .131415 .181140 .180665 .180590 .180316 .180041 .179766 .179492

0.179r.l7 .178943 .178668 .173394 .173120 .177846 .177571 .177297 .177023 .176749

O.'l 76476 .176202 .175928 .17.5655 .175381 .175107 .174834 .174,561 .174287 .174014

0.173741 .173468 .173195 .172922 .172649 .172.376 .172103 .171830 .171558 .171235 .171013

D. 1". Cotang. I D. 1". Tang.

M.

60 59 53 57 56 55 54 53 52 51

50 49 48 47 46 45 44 43 42 41

40 39 33 37 36 35 34 33 32 31

30 29 23 27 26 25 24 23 22 21

20 19 18 17 16 15 14 13 12 U

10 9 8 7 6 5 4 3 2 1 0

M.

56

i>08

340

TABLE XIII. LOGARITHMIC SINES,

1450

M.

0 1 2 3 4 5 6 7 8 9

10 11 12 l-J 14 15 16 17 13 19

20 21 22 23 24 25 26 27 2S 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 44 45 46 47 43 49

50 51

52 53 54 55 56 57 53 59 60

Sine.

9.747562 ,747749 .747936 .743123 .743310 ,743497 .743633 .743370 .749056 .749243

9.749123 .749615 .749301 .749937 .750172 .750353 .750543 .750729 .750914 .751099

9.751234 .751469 .751654 .751839 .752023 .752203 .752.392 .752576 .7.52760 .752944

9.753123 .753312 .753495 .753679 .753362 .754046 .75422J .751412 .754595 .754778

9.754960 .755143 .755326 .755503 .755690 .755372 .756054 .756236 .756413 .756600

9.756782 .756963 .757144 .757326 .757507 .757633 .757869 .753050 .758230 .753411 .753591

M. Cosine.

D. 1".

3.12 3.12 3.12 3.11 3.11 3.11 3.11 3.11 3.K) 3.10

3.10 3.10 3.10 3.10 3.09 3.09 3.09 3.09 3.09 3.03

3.03 3.03 3.03 3.03 3.07 3.07 3.07 3.07 3.07 3.06

3.06 3.06 3.06 3.06 3.05 3.05 3.05 3.05 3.05 3.05

.3.04 3.04 3.04 3.04 3.04 3.03 3.03 3.03 3.03 3.03

3.02 3.02 3.02 .3.02 3.02 3.02 3.01 3.01 3.01 3.01

Cosine.

D. 1".

9.913574 .91-4^9 .918404 .913313 .913233 .913147 .913062 .917976 .917391 .917805

9.917719 .917634 .917548 .917462 .917376 .917290 .917204 .917118 .917032 .916946

9.916359 .916773 .916637 .916600 .916514 .916427 .916.341 .916254 .916167 .916031

9.915994 .915907 .91.5320 .915733 .915646 .915.5.59 .91.5472 .915335 .915297 .915210

9.915123 .915035 .914948 .914360 .914773 .914635 .914593 .914510 .914422 .914334

9.914246 .914153 .914070 .913932 .91.3394 .913366 .913718 9136-30 .913.541 .913453 .913365

D. 1".

Sine.

1.42 1.42 1.42 1.42 1.42 ) 43 1.43 1.43 1.43 1.43

1.43 1.43 1.43 1.43 1.43 1.43 1.43 1.44 1.44 1.44

1.44 1.44 1.44 1.44 1.44 1.44 1.44 1.44 1.45 1.45

1.45

1.45

1.45-

1.45

1.45

1.45

1.45

1,45

1.45

1.46

1.46 1.46 1.46 1.46 1.46 1.46 1.46 1.46 1.46 1,46

1.47 1.47 1.47 1.47 1.47 1.47 1.47 1.47 1.47 1.47

Tang.

D. 1".

9.8239S7 .829260 .829532 .829 >05 .830077 .830349

.Sb'06-4!l .830393 .831165 .8314.37

9.831709 .831931 .832253 .832.-,25 .832796 .833063 .833339 .8.3361 1 .833332 .834154

9.331425 .83 J 696 .8.34967 .8.35233 .835509 .835780 .836051 .836322 .836593 .836364

9.837134

.837405 .837675 .837946 .833216 .833487 .838757 .839027 .839297 .839563

9.839833 .840103 .840378 .840643 .840917 .841187 .8414.57 .841727 .841996 .842266

9.842535

.842305 .843074 .843343 .84.3612 .843332 .844151 .844420 .844639 .8449.58 .84.5227

D. 1".

4.54 4.. 54 4.54 4.54 4.54 4.54 4.53 4.53 4.53 4.53

4.53 4.53 4.. 53 4.53 4.53 4.53 4.52 4.52 4.52 4.52

4.52 4.52 4.52 4.52 4..52 4.52 4.51 4.51 4.51 4.51

4.51 4.51 4.51 4.51 4.51 4.51 4.50 4.50 4.50 4.50

4.50 4.50 4.50 4.50 4.50 4.49 4.49 4.49 4.49 4.49

4.49 4.49 4.49 4.49 4.49 4.49 4.48 4.48 4.48 4.43

Cotang.

M

0.171013

60

.170740

59

.170463

58

.170195

57

.169923

56

.169651

55

.169379

54

.169107

53

.163335

52

.163563

51

0.168291

50

.163019

49

.167747

48

.167475

47

.167204

46

.166932

45

.166661

44

.166339

43

.166113

42

.165846

41

0.165575

40

.165301

39

Cotang. : D. 1".

.165033 .164762 .164491 .164220 .16-3949 .163678 .16.3407 .163136

0.162S66 ,162-595 .162-325 .162054 ,161784 ,161513 .161243 .160973 .160703 .160432

0.160162 .1-59392 .159622 .159352 .1.59083 .153313 ,158543 ,1.58273 .153004 .1577'^

0.157465 .1-57195 .1-56926 .156657 .156-333 .156118 .1-5.5349 .155530 ,15.53!!

.154773

Tang. I M.

124c

553

COSINEb, TANGENT&, AND COTANGENTS.

209

14:43

M.

0 1

2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18 19

20 21 22 23 24 25 26 27 28 29

30 31 32 33 34 35 36 37 38 39

40 41 42 43 44 45 46 47 48 49

Sine.

9.758591 .758772 .758952 .759132 .7o9:n2 .759492 .759672 .759852 .760:131 .760211

9.760390 .760569 .760748 .760927 .761106 .761235 .761464 .761642 .761821 .761999

9.7C2177 .7623.")6 .762534 .762712 .762889 .763067 .763245 .763422 .763600 .763777

9.763954 .764131 .764308 ,764435 .764662 .7648.33 .765015 .765191 .765.367 .765544

9.765720 .765896 .766072 .766247 .766423 .766593 .766774 .766949 .767124 .767300

D.l"

50 51 52 53 54 55 56 57 53 59 60 1

M. I

9.767475 .767649 .767824 .767999 .763173 .768348 .768522 .763697 .763371 .769045 .769219

Cosine.

3.01 3.00 3.00 3.00 3.00 3.01) 2.99 2.99 2.99 2.99

2.99 2.99 2.98 2.98 2.98 2.93 2.98 2.97 2.97 2.97

2.97 2.97 2.97 2.96 2.96 2.96 2.96 2.96 2.95 2.95

2.95 2.95 2.95 2.95 2.94 2.94 2.94 2.94 2.94 2.93

2.93 2.93 2.93 2.93 2.93 2.92 2.92 2.92 2.92 2.92

2.91

2.91

2.91

2.91

2.91

2.91

2.90

2.90

2.90

2.90

D. 1".

9.913365 .913276 .913Ib7 .9130'J9 .913010 .912922 .912833 .9127-14 .912655 .912566

9.912477 .912388 .912299 .912210 .912121 .912031 .911942 .911853 .911763 .911674

9.911584 .911495 .911405 .911315 .911226 .911136 .911046 .910956 .910866 .910776

9.910636 .91U596 .910506 .910415 .910325 .910235 .910144 .910054 .909963 .909873

9.9097S2 .909691 .909601 .909510 .909419 .909328 .909237 .909146 .909055 .903964

9.908873 .903781 .908690 .903599 .903507 .908416 .903324 .903233 .903141 .903049 .907958

Cosine. D. 1".

Tang.

D. 1".

1.47 1.48 1.43 1.48 1.48 1.48 1.48 1.48 1.48 1.48

1.48 1.48 1.49 1.49 1.49 1.49 1.49 1.49 1.49 1.49

1.49 1.49 1.49 1.50 1.50 1.50 1.50 1.50 1.50 1.50

I.. 50 1.50 1.50 1.51 1.51 1.51 1.51 1.51 1.51 1.51

1.51 1.51 1.51 1.51 1.52 1.52 1.52 1.52 1.52 1.52

1.52 1.52 1.52 1.52 1.52 1.53 1.53 1.53 1..53 1.53

Sine.

9.845227 .845496 .845764 .846033 .846302 .846370 .846839 .847108 .847376 .847644

9.847913

.843181 .843449 .848717 .843986 .849254 .849522 .849790 .850057 .350325

9.850593 .850861 .851129 .851.396 .851664 .851931 .852199 .852466 .852733 .853001

9.853268 .853535 .853302 ,854C69 .854336 .854603 .854870 .855137 .8.55404 .855671

9.855933 .856204 .8.56471 .856737 .857004 .857270 .857537 .857803 .858069 .858336

9.85S602 .858868 .859134 .859400 .859666 .859932 .860198 .860464 .860730 .860995 .861261

Cotang.

4.48 4.48 4.48 4.43 4.48 4.48 4.48 4.47 4.47 4.47

4.47 4.47 4.47 4.47 4.47 4.47 4.47 4.46 4.46 4.46

4.46 4.46 4.46 4.46 4.46 4.46 4.46 4.46 4.46 4.45

4.45 4.45 4.45 4.45 4.45 4.45 4.45 4.45 4.45 4.44

4.44 4.44 4.44 4.44 4.44 4.44 4.44 4.44 4.44 4.44

4.44 4.43 4.43 4.43 4.43 4.43 4.43 4.43 4.43 4.43

0.154773 .154504 .154236 .153967 .153698 153430 .153161 .152892 .152624 .152356

0.152087 .151819 .151551 .151283 .151014 .150746 .150478 .150210 .149943 .149675

0.149407 .149139 .148871 .148604 .148336 .148C69 .147801 .147534 .147267 .146999

0.146732 .146465 .146198 .145931 .145664 .145397 .145130 .144363 .144596 .144329

0.144062 .143796 .143.529 .143263 .142996 .142730 .142463 .142197 .141931 .141664

0.141398 .141132 .140866 .140600 .140334 .140063 .139802 .1395.36 .139270 .139005 .138739

D. 1". I Cotang. D. 1". I Tang.

M.

60 59 58 57 56 55 54 53 52 51

50 49 43 47 46 45 44 43 42 41

40 39 38 37 36 35 34 33 32 31

30 29 28 27 26 25 24 23 22 21

20 19 18 17 16 15 14 13 12 11

10 9 8 7 6 5 4 3 2 1 0

M.

210

B60

TABLE XIII.

LOGARITHMIC SINES,

14:3

M.

0 1

2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18 19

20 21 22 23 24 25 26 27 28 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 44 45 46 47 48 49

50 51 52 53 54 55 56 57 53 59 60

M.

Sine.

9.769219 .769393 .769566 .769740 .769913 .770037 .770260 .770433 .770506 .770779

9.770952 .771125 .771293 .771470 .771843 .771815 .771937 .772159 .772331 .772503

9.772675 .772847 .773013 .773190 .773361 .773533 .773704 .773575 .774046 ,774217

9.774338

.77455S ,774729 ,774399 .775070 775240 .775410 .775530 .775750 .775920

9.776090 .776259 .776429 .776593 ,776763 .776937 ,777106 ,777275 ,777444 .777613

9.777731 .777950 .773119

.778237 .773455 .773624 .773792 .773960 .779123 .779293 .779463

Cosine.

D. 1".

2.00 2.90 2.39 2.39 2.39 2.89 2.89 2,33 2.33 2.83

2.88 2.33 2.33 2.37 2.37 2.37 2.37 2.37 2.37 2.S6

2.36 2.36 2.36 2.86 2.35 2.35 2.85 2.85 2.35 2.35

2.34 2.84 2.34 2.34 2.34 2.84 2.S3 2.33 2.33 2.83

2.83 2.83 2.32

2.32 2.82 2.82 2.82 2.82 2.81 2.81

2.81 2.81 2.81 2.81 2. SO 2.80 2.80 2.80 2.S0 2.79

D. 1".

Cosine.

9.907953 .907866 .907774 .907632 .907590 .907493 .907406 .907314 .907222 .907129

9.907037 .906945 .906352 .906760 .906667 .906575 .906432 .906339 .906296 .906204

9.906111 .906018 .905925 .90.5332 .905739 .905645 .905552 .905459 .905366 .905272

9.905179 .905035 .904992 .904893 .904304 .904711 .904617 .90^1523 ,904429 .904335

9.904241 .904147 ,904053 .903959 .903364 .903770 .90.3676 .903.581 .90.3487 .903392

9.903293 ,903203 .903103 .903014 .902919 .902324 ,902729 .9026.34 .902.539 ,902444 .902349

Sine.

D. 1".

,53 ,53 ,53 ,53 ,53 ,53 ,54 ,54 .54 54

,54 ,54 .54 ,54 54 .54 ,55 55 ,55 ,55

,55 ,55 ,55 ,55 ,55 ,55 ,55 ,56 ,56 ,56

,.56 ,56 .56 56 56 ,56 ,56 ,57 ,57 57

,57 ,57 ,57 57 57 ,57 ,57 .57 ,58 ,58

.58 ,58 ,58 ,53 ,53 ,.53 ,58 ,53 .59 ,59

D. 1".

Tang.

9.861261 .861.527 .861792 .862058 ,862323 .862.589 ,862354 ,863119 ,863335 .86.3650

9.863915 .864180 ,864445 ,864710 .864975 .865240 ,865.505 .865770 .866035 .866300

9.866564 ,866329 .867094 ,8673.58 .867623 .867337 .8681.52 .863416 .86S630 .863945

9.869209 .869473 .869737 .870001 .870265 .870529 ,870793 ,871057 ,871321 .871585

9.871349 .872112 .872376 ,872640 .872903 .873167 .873430 .873694 .873957 .874220

9.874434 .874747 .875010 .875273 .8755.37 .875300 .876063 .876326 .876589 ,376352 ■877114

Cotang,

D. 1".

4.43 4.43 4.43 4.42 4.42 4.42 4.42 4.42 4.42 4.42

4.42 4.42 4.42 4.42 4.42 4.41 4.41 4.41 4.41 4.41

4.41 4.41 4.41 4.41 4.41 4.41 4.41 4.41 4.40 4.40

4.40 4.40 4.40 4.40 4.40 4.40 4.40 4.40 4.40 4.40

. 4.40 4.39 4.39 4.39 4.39 4.39 4.39 4.39 4.39 4.39

4.39 4.39 4.39 4.39 4.33 4.33 4.33 4.33 4.38 4.33

D. 1".

Cotang.

0.133739 ,133173 133203 ,137942 ,137677 ,137411 137146 ,136881 ,136615 ,136350

0

136085 135820 135555 135290 135025 134760 134495 1342.30 13.3965 133700

133436 133171 132906 132642 132.377 132113 131843 131534 131320 131055

130791 130527 130233 129999 129735 129471 129207 123943 123679 123415

128151 127883 127624 127360 127097 126833 126570 126306 126043 125780

125516 125253 124990 124727 124463 124200 123937 123674 12311 1 123143 122386

Tang.

ISd^

63

COSINES, TANGENTS, AND COTANGENTS.

211

1433

M.

Sine.

0 1 2 3 4 5 6 7 8 9

10 11

12 13

14 15 16 [7 IS 19

20 21 22 23 24 25 26 27 28 29

30 31 32 33 3i 35 36 37 35 39

40 41 42 43 44 45 46 47 43 49

50 51 52 53 54 55 56 o7 5S 59 60

D. 1".

9.779463 .779631

.779798 .779966 .780 133 .780300 .78(H67 ,780634 .780801 .780968

9.781134 ,781301 .781463 .781634 .781800 .731966 .782132 .782293 .782464 .782630

9.782796 .782961 .783127

,783292 .783453 .783623 ,783783 ,783953 .784118 ,784282

9.784447 .784612 .784776 .784941 .785105 .785269 .785433 .785597 .785761 .785925

9.736039 .7862.52 .786416 .786579 .786742 .736906 .737069 .787232 .787395 .787557

9.787720 .737833 .738045 .733208 .733370 .783532 .783694 .783856 .789018 .789180 .739^12

Cosine.

2.79 2.79 2.79 2.79 2.79 2.78 2.78 2.78 2.73 2.73

2.78 2.77 2.77 2.77 2.77 2.77 2.77 2.76 2.76 2.76

2.76 2.76 2.76 2.75 2.75 2.75 2.75 2.75 2.75 2.74

2.74 2.74 2.74 2.74 2.74 2.73 2.73 2.73 2.73 2.73

2.73 2.73 2.72 2.72 2.72 2.72 2.72 2.72 2.71 2.71

2.71

2.71

2.71

2.71

2.70

2.70

2.70

2.70

2.70

2.70

D. 1".

9.902349 .902253 .902158 .902063 .901967 .901372 .901776 .901681 .901585 .901490

9.901394 .901293 .901202 .901106 .901010 .900914 .900818 .900722 .900626 .900529

9.900433 .900337 .900240 .900144 .900047 .899951 .899354 .899757 .899660 .899564

9.899467 .899370 .899273 .899176 .899073 .893981 .893834 .893787 .898689 .893592

9.898494 .898397 .893299 .898202 .893104 .893006 .897908 .897810 .897712 .897614

9.897516 .897418 .897320 .897222 .897123 .897025 .896926 .896828 .896729 .896631 .896532

Tang.

1.59 I. .59 1.59 1.59 1.59 1.59 1..59 1.59 1.59 1.60

1.60 1.60 1.60 1.60 l.GO 1.60 1.60 1.60 1.60 1.61

1.61 1.61 1.61 1.61 1.61 1.61 1.61 1.61 1.61 1.62

1.62 1.62 1.62 1.62 1.62 1.62 1.62 1.62 1.62 1.62

1.63 1.63 1.63 1.63 1.63 1.63 1.63 1.63 1.63 1.63

1.64 1.64 1.64 1.64 1.64 1.64 1.64 1.64 1.64 1.64

M. Cosine. I D. 1". I Sine. D. 1". Cotang.

D. 1".

9.877114 .877377 .877640 .8779ft3 .873165 .878423 .878691 .878953 .879216 .879478

9.879741

.880003 .880265

.880528 .880790 .8.^5 1052 881314 .881577 .881839 .882101

9.8S23e3 .882625 .832887 .883143 .883410 .883672 .883934 .834196 .884457 .884719

9.884930 .835242 .885504 .835765 .886026 .886283 .886.549 .886811 .887072 .887333

9.887594 .837855 .883116 .883378 .838639 .888900 .889161 .889421 .839682 .889943

9.890204 .890465 .890725 .8909-^6 891247 .891507 .891763 .892023 .892239 .892549 .892310

Cotang.

4.38 4.38 4.38 4.38 4.38 4.38 4.38 4.33 4.. 37 4.37

4.37 4.37 4.37 4.37 4.-37 4.37 4.37 4.37 4.37 4.37

4.37 4.37 4.36 4. -36 4.36 4.-36 4.36 4.36 4.36 4.30

4.36 4.36 4.36 4.36 4.36 4.36 4.36 4.35 4.35 4.35

4.35 4.35 4.-35 4.35 4.. 35 4.35 4.35 4.35 4.35 4.35

4.35 4.35 4.34 4.34 4.34 4.34 4.34 4.34 4.34 4.34

M.

0.122886 .122623 .122360 .122097 .121835 .121572 .121309 .121047 .120784 .120522

0.1202.59 .119997 .119735 .119472 .119210 .118943 .118686 .118423 .118161 .117899

0.1176.37 .117375 .117113 .116852 .116590 .116328 .116066 .115804 .115543 .115281

0.115020 .114758 .114496 .114235 .113974 .11.3712 .113451 .113189 .112928 . 1 126G7

0.112406 .112115 .111 S84 .111(;22 .111361

.imon

.I1(K:!9 .11(1579 .11(1318 .1 10057

0. l(l'.)796 .l(i',).'):'.5 .l!n)275 .109014 .1087 .53 .108493 .108232 .107972 .107711 .107451 .107190

D. 1".

60 59 58 57 56 55

52 51

50 •49 48 47 46 ^5 44 43 42 41

40 39 38 37 36 35 34 33 32 31

30 29 28 27 26 25 24 23 22 21

20 19 IS 17 10 15 14 13 12 II

1ft 9

8

Tang. M

laT'

5a<-

212

38°

TABLE XIIT.

LOGARITHMIC SINES,

14:1C

M.

0 1 2 3 4 5 6 7 8 9

10 II 12 13 14 15 16 17 13 19

20 21 22 23 24 25 26 27 28 29

30 31 32 33 31 35 36 37 38 39

40 41

42 43 44 45

46 47 48 49

50 51 52 53 54 55 56 57 58 59 60

Sine.

D. 1".

9.789312 .789504 .789665 .789S27 .789983 .790149 .790310 .790471 .790632 .790793

9.790954 .791115 .791275 .791436 .791596 .791757 .791917 .792077 .792237 .792397

9.7925.57 .792716 .792376 .793035 .793195 .793354 .793514 .793673 .793832 .793991

9.794150 .794303 .794467 .794626 .794784 .794942 .795101 .795259 .795417 .795575

9.795733 .795891 .796049 .796206 .796.364 .790521 .796679 .796836 .796993 .797150

9.797.307 .797464 .797621 .797777 .797934 .793091 .798247 .793403 .798560 ,798716 .793872

M. Cosine.

2.69 2.69 2.69 2.69 2.69 2.69 2.6S 2.63 2.68 2.63

2.63 2.63 2.67 2.67 2.67 2.67 2.67 2.67 2.67 2.66

2.66 2.66 2.66 2.66 2.66 2.65 2.65 2.65 2.65 2.65

2.65 2.64 2.64 2.64 2.64 2.64 2.64 2.64 2.63 2.63

2.63 2.63 2.63 2.63 2.62 2.62 2.62 2.62 2.62 2.61

2.61 2.61 2.61 2.61 2.61 2.61 2.61 2.60 2.60 2.60

Cosine.

D.l

9.896.5-32 .896433 .896335 .896236 .896137 .896038 .895939 .895840 .895741 .895641

9.895542 .89.5443 .895343 .895244 .895145 .895045 .894945 .894846 .894746 .894646

9.894.546 .894446 .894346 .894246 .894146 .894046 .893946 .893846 .893745 .893645

9.893544 .893444 .893343 .893243 .893142 .893041 .892940 .8923.39 .892739 .892633

9.892536 .892435 .892334 .892233 .892132 .892030 .891929 .891827 .891726 .891624

9.891523 .891421 .891319 .891217 .891115 .891013 .890911 .890809 .890707 .890605 .890503

D. 1".

Sine.

1.65 1.65 1.65 1.65 1.65 1.65 1.65 1.65 1.65 1.65

1.66 1.66 1.66 1.66 1.66 1.66 1.66 1.66 1.66 1.66

1.67 1.67 1.67 1.67 1.67 1.67 1.67 1.67 1.67 1.67

1.63 1.63 1.63 1.63 1.63 1.63 1.63 1.63 1.63 1.63

1.69 1.69 1.69 1.69 1.69 1.69 1.69 1.69 1.69 1.69

1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70

Tang.

9.892S10 .893070 .893331 .893591 .893851 .894111 .894372 .894632 .894892 .895152

9.895412 .895672 .895932 .896192 .8964.52 .896712 .896971 .897231 .897491 .897751

9.898010 .898270 .8985.30 .898789 .899049 .899308 .899563 .899827 .900087 .900346

9.900605 .900864 .901124 .901383 .901642 .901901 .902160 .902420 .902679 .902933

9.303197 .903456 .903714 .903973 .9042.32 .904491 .904750 .905003 .805267 .905526

9.905785 .906043 .906302 .906560 .906819 .907077 .907336 .907594 .907853 .903111 .908269

D. 1".

D. 1". Cotang.

4.34 4.34 4.34 4.34 4.34 4.34 4.34 4.34 4.33 4.33

4.33 4.33 4.33 4.33 4.33 4.33 4.33 4.33 4.-33 4.33

4.33 4.33 4.33 4.-33 4.33 4.32 4.32 4.32 4.32 4.-32

4.32 4.32 4.32 4.32 4.32 4.32 4.32 4.32 4.32 4.32

4.32 4.32 4.31 4.31 4.31 4.31 4.31 4.31 4.31 4.31

4.31 4.31 4.31 4.31 4.31 4.31 4.31 4.31 4.31 4.31

Cotang.

M.

0.107190

60

.106930

59

.106669

58

.106409

57

.106149

56

.105889

55

.105628

54

.10.5368

53

.105108

52

.104848

61

0.104583

50

.104328

49

.104063

48

.103808

47

.103548

46

.103283

45

.103029

44

.102769

43

.102509

42

.102249

n I ni nnn

41

D. 1".

.101730 .101470 .101211 .100951 .100692 .100432 .100173 .099913 .099654

0.099395 .099136 .098876 .098617 .098358 .098099 .097840 .097580 .097321 .097062

0.096S03 .096544 .096286 .096027 .095768 .095509 .095250 .094992 .094733 .094474

0.094215

.09.3957 .093698 .093440 .093181 .092923 .092664 .092406 .092147 .091889 .091631

Tang. M

10 9 8 7 6 5 4 3 2 1 0

l»8o

61

COSINES, TANGENTS, AND COTANGENTS.

2Vc

14:0=

M.

0 1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18 19

20

21 22 23 24 25 26 27 23 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 44 45 46 47 43 49

50 51 52 53 54 55 53 57 5.3 59 60

Sine.

D. 1".

9.793372 .799023 .799134 .799339 .79949.5 .799651 .799306 .799962 .800117 .800272

9.300427 .800532 .S0J737 .800392 .801047 .801201 .8013.56 .801511 .801665 .801819

9.801973 .802123

.802232 ,802436 .802589 .802743 .802397 .803050 .803204 .803357

9.803511

.803664 .803817 .803970 .804123 .804276 .804423 .804531 .804734 .804836

9.805039 .805191 .80.5343 .805495 .80.5647 .805799 .80.5951 .806103 .8062.54 .806406

9.806557 .806709 .806360 .80701 1 .807163 .8(37314 .807465 .807615 .807766 .807917 .803067

Cosine.

2.60 2.60 2.6') 2.59 2.59 2.59 2.59 2.59 2.59 2.59

2.58 2.53 2.58 2.58 2. .58 2.58 2.57 2.57 2.57 2.57

2.57 2.57 2.57 2.. 56 2.56 2.56 2.56 2.56 2.56 2.55

2.55 2.55 2.55 2. .55 2.55 2.. 55 2.54 2.54 2.54 2.54

2.54 2.54 2.54 2.53 2.53 2. .53 2. .53 2.. 53 2.53 2.52

2.52 2.52 2.52 2. .52 2.. 52 2.52 2.51 2.51 2.51 2.51

M.

LS9^

Cosine.

D. 1".

9.890503 .890400 .890293 .890195 .890093 .839990 .889333 .889785 .889632 .839579

9.839477 .839374

.889271 .839163 .889064 .838961 .833853 .833755 .888651 .838543

9.833444 .833341

.838237 .833134 .888030 .887926 .887822 .837718 .837614 .837510

9.837406

.837302 .837198 .837093 .836'989 .836385 .836780 .836676 .886571 .886466

9.836362

.836257 .836152 .836047 .835942 .835337 .835732 .835627 .835.522 .835416

9.83.5311

.83.5205 .835100 .884994 .834339 .834783 .834677 .834572 .834466 .834360 .884254

D. 1"

Tang.

D. 1".

1.71 1.71 1.71 1.71 1.71 1.71 1.71 1.71 1.71 1.71

1.72 1.72 1.72 1.72 1.72 1.72 1.72 1.72 1.72 1.72

1.73 1.73 1.73 1.73 1.73 1.73 1.73 1.73 1.73 1.74

1.74 1.74 1.74 1.74 1.74 1.74 1.74 1.74 1.74 1.75

1.75 1.75 1.75 1.75 1.75 1.75 1.75 1.75 1.75 1.76

1.76 1.76 1.76 1.76 1.76 1.76 1.76 1.76 1.77 1.77

Sine.

9.903369 .903628 .90S336 .909144 .909402 .909660 .909918 .910177 .910435 .910693

9.910951 .911209 .911467 .911725 .911932 .912240 .912493 .912756 .913014 .913271

9.913529 .913787 .914044 .914302 .914.560 .914317 .915075 .91.5332 .915.590 .915347

9.916104 .916362 .916619 .916877 .917134 .917391 .917648 .917906 .918163 .918420

9.918677 .918934 .919191 .919448 .919705 .919962 .920219 .920476 .920733 .920990

9.921247 .921503 .921760 .922017 .922274 .922530 .922787 .923044 .923300 .923557 .923314

Cotang.

4.30 4.30 4.30 4.30 4.30 4.30 4.30 4.30 4.30 4.30

4.30 4.30 4.30 4.. 30 4.30 4.30 4.30 4.30 4.30 4.30

4.29 4.29 4.29 4.29 4.29 4.29 4.29 4.29 4.29 4.29

4.29 4.29 4.29 4.29 4.29 4.29 4.29 4.29 4.29 4.29

4.23 4.23 4.28 4.28 4.23 4.23 4.23 4.28 4.23 4.28

4.28 4.23 4.28 4.28 4.28 4.23 4.23 4.28 4.23 4.23

D. 1". I Coteng.

0.091631 .091372 .091114 .090356 .090598 .090340 .090032 .089323 .039565 .039307

0.0S9049 .038791 .038533 .083275 .033018 .037760 .037502 .037244 .036936 .086729

0.036471 .086213 .0359.56 .085693 .085440 .035183 .084925 .084663 .084410 .034153

0.033396 .033633 .033331 .033123 .032366 .082609 .032352 .032094 .031337 .081580

0.031323 .031066 .080309 .030552 .030295 .030033 .079781 .079524 .079267 .079010

0.073753 .073497 .078240 .077933 .077726 .077470 .077213 .076956 .076700 .076443 .076136

M.

60

D. 1".

Tang.

59 53 57 56 55 .54 53 52 51

49 43 47 46 45 44 43 42 41

40 39 38 37 36 35 34 33 32 31

30 29 23 27 26 25 24 23 22 21

20 19

18 17 16 15 14 13 12 11

10 9 8 7 6 5 4 3 2 I _0_

M.

tu^.

214

*0O

TABLE XIII. LOGARITHMIC SINES,

139"

M.

0 I

2 3

4 5 6

7 8 9

10 II 12 13 14 15 16 17 18 19

20 21 22 23 24 25 26 27 2S 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43

44 45 46 47 ,48 49

50 51 52 53 54 55 56 57 58 59 60

M.

Sine.

9.808067 .808218 .803363 .808519 .808669 .808819 .808969 .809119 .809269 .809419

9.809569 .809713 .809363 .810017 .810167 .810316 .810465 .810614 .810763 .810912

9.311061 .811210 .8113.53 .811507 .811655 .811804 .811952 .812100 .812243 ,812396

9.812544 312692 .812S40 .812933 .813135 .8132S3 .813430 .813573 .813725 .813872

9.814019 .814166 .814313 .814460 .814607 .814753 .814900 .815046 .815193 .815339

9.815185 .815632 .815773 .815924 .816069 .816215 .816361 .816.507 .816652 .816793 .816943

D. 1".

2.51 2.51 2.51 2.50 2.50 2.50 2.50 2. .50 2.50 2.50

2.49 2.49 2.49 2.49 2.49 2.49 2.43 2.43 2.43 2.43

2.43 2.43 2.43 2.47 2.47 2.47 2.47 2.47 2.47 2.47

2.46 2.46 2.46 2.46 2.46 2.46 2.46 2.45 2.45 2.45

2.45 2.45 2.45 2.45 2.44 2.44 2.44 2.44 2.44 2.44

2.44 2.43 2.43 2.43 2.43 2.43 2.43 2.43 2.42 2.42

Cosine

D. 1".

Cosine.

9.8342-54 .831143 .881042 .883936 .883329 .833723 .833617 .833510 .883401 .883297

9.883191

.883034 .882977 .882371 .882764 .882657 .882550 .882443 .8823:36 .882229

9 882121

.882014 .831907 .831799 .831692 .881534 .881477 .831369 .831261 .831153

9.831046

.880933 .830330 .830722 .850613 .830.505 .830397 .880239 .830180 .830072

9.379963

.879355 .879746 .879637 .879529 .879120 .879311 .879202 .879093 .873984

9.878375 .878766 .878656 .878547 .87,3433 .878323 .873219 .878109 .877999 .877890 .877780

Sine.

D. 1".

.77 .77 .77 .77 .77 .77 .77 .77 .73 .73

.73 .78 .78 .73 .78 .78 .73 .79 .79 .79

.79 .79 .79 .79 .79 .79 .79 .80 .80 .80

.80 .80 .80 .80 .80 .80 .31 .31 .81 .81

.81

.81 .81 .81

.81 .81

.82 .82 .82 .82

.82 .82 .82 .82 .82 .83 .83 .83 .83 .83

D. 1".

Tang.

9.92.3314 .921070 .924327 .921583 .924840 .925096 .925352 .925609 .92-5865 .926122

9.926373 .9266.34 .926890 .927147 .927403 .927659 .927915 .928171 .923127 .92?634

9.923940 .929196 .929452 .929703 .929964 .930220 .930475 .930731 .930937 .931243

9.931199 .931755 .932010 .932266 .932522 .932773 .933033 .933239 .93.3545 .933800

9.931056 .9.31311 .9.31567 .9.31322 .9.35078 .935.3.33 .935.539 .935314 .936100 .9363.55

9.936611 .936366 .937121 .937377 .937632 .937837 .933142 .938393 .9336.53 .933903 .939163

D. 1".

4.28 4.23 4.27 4.27 4.27 4.27 4.27 4.27 4.27 4.27

4.27

4.27 4.27 4.27 4.27 4.27 4.27 4.27 4.27 4.27

4.27 4.27 4.27 4.27 4.27 4.27 4.26 4.26 4.26 4.26

4.26 4.26 4.26 4.26 4.26 4.26 4.26 4.26 4.26 4.26

4.26 4.26 4.26 4.26 4.26 4.26 4.26 4.26 4.26 4.26

426 4.26 4.26 4.25 4.25 4.25 4.25 4.25 4.25 4.25

Cotang. i D. 1".

Cotang.

0.076186 .075930 .075673 .075417 .075160 .074901 .074613 .071391 .074135 .073878

0.073622 .073366 .073110 .072853 .072597 .072.341 .072135 .071329 .071573 .071316

0.071060 .070301 .070.548 .070292 .070036 .069730 .069525 .069269 .069013 .063757

0.068501 .063215 .067990 .067731 .067478 .067222 .066967 .066711 .06&155 .066200

0.06.5944 .065639 .0654.33 .065178 .061922 .061667 .064411 .0641.56 .063900 .063645

0.063.389 .063134 .062379 .062623 .062363 .062113 .061358 .061602 .061347 .061092 .060837

Tang. I M.

I9f%0

49^

COSlNEll, TANGENTS, AND COTANGENTS.

410

215

1383

M.

0 1 •2 3 4 5 6 7 S 9

10 U 12 13 14 15 16 17 IS 19

20

21 22 23 24 25 26 27 2S 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 44 45 46 47 43 49

50 51

54 55 56 57 53 59 60

M.

Sine.

9.816943

.817038 .817233 .817379 .817524 .817663 .817813 .817953 .818103 .818247

9.818392 .818536 .818631 .81S325 .818969 .319113 .819257 .319401' .819545 .3196S9

9.819832 .819976 .820120 .820263

.820406 .820550 .820693 .S20S36 .820979 .821122

9.321265 .821407 .821550 .321693 .321335 .321977 .822120 .822262 .822404 .822546

9.822633 .322830 .822972 .323114 .823255 .82.3397 .823539 .82.3680 .823821 .823963

9.824104 .824245 .824386 .324527 .824668 .824303 .824949 .8-25090 .82.5230 .825371 .825511

Cosine.

D. 1".

2.42 2.42 2.42 2.42 2.42 2.41 2.41 2.41 2.41 2.41

2.41 2.41 2.40 2.40 2.40 2.40 2.40 2.40 2.40 2.39

2.39 2.39 2.39 2.39 2.39 2.39 2.33 2.-33 2.38 2.38

2..33 2.38 2.33 2.37 2.37 2.37 2.37 2.37 2.37 2.37

2.37 2.. 36 2.36 2.. 36 2.. 36 2.. 36 2..36 2.36 2.35 2.35

2.35 2.35 2.35 2.35 2.35 2.34 2.34 2.34 2.34 2.34

D. 1".

Cosine.

9.877780 .877670 .877560 .877450 .877340 .877230 .877120 .877010 .876399 .876739

9.376678 .876568 .876457 .876347 .876236 .876125 .876014 .875904 .875793 .875682

9.875571

.875459 .875.348 .8752:37 .875126 .875014 .874903 .874791 .874680 .874568

9.874456 .874344 .874232 .874121 .874009 .873396 .873734 .873672 .873560 .873443

9.873335 .873223 .873110 .872993

.872385 .872772 .872659 .872.547 .3724.34 .872321

9.872203 .872095 .871981 .871863 .871755 .871641 .871528 .871414 .871301 .871137 .871073

Sine.

D. 1".

1.83 1.83 1.83 1.83 1.84 1.34 1.84 1.84 1.84 1.34

1.84 1.84 1.84 1.84 1.85 1.85 1.85 1.85 1.85 1.85

1.85 1.85 1.85 1.86 1.86 1.86 1.86 1.86 1 .86 1.86

1.86 1.86

1.87 1.87 1.87 1.87 1.87 1.87 1.87 1.87

1.87 1.88 1.83 1.88 1.83 1.83 1.88 1.88 1.88 1.88

1.89 1.89 1.89 1.89 1.89 i.89 1.89 1.89 1.89 1.90

D. 1".

Tang.

9.939163 .939418 .939673 .939923 .940183 .940439 .940694 .940949 .941204 .941459

9.941713 .941968 .942223 .942478 .942733 .942988 .943243 .943493 .943752 .944007

9.944262 .944517 .944771 .94.5026 .945281 .945535 .945790 .946045 .946299 .946554

9.946S08 .947063 .947318 .947572 .947827 .948031 .948335 .948590 .948344 .949099

9.949353 .949603 .949862 .950116 .950371 .950625 .950879 .951133 .951383 .951642

9.951896 .952150 .952405 .952659 .952913 .953167 .953421 .953675 .953929 .954183 .954437

Cotang.

D. 1'.

4.25 4.25 4.25 4.25 4.25 4.25 4.25 4.25 4.25 4.25

4.25 4.25 4.25 4.25 4.25 4.25 4.25 4.25 4.25 4.25

4.25 4.25 4.24 4.24 4.24 4.24 4.21 4.24 4.24 4.24

4.24 4.24 4.24 4.24 4.24 4.24 4.24 4.24 4.24 4.24

4.24 4.24 4.24 4.24 4.24 4.24 4.24 4.24 4.24 4.24

4.24 4.24 4.24 4.24 4.24 4.24 4.24 4.23 4.23 4.23

D. 1".

Cotang.

0.060837 .060582 .060327 .060072 .059817 .059561 .059306 .059051 .058796 .058541

0.053287 .053032 .057777 .057522 .057267 .057012 .056757 .056.502 .056248 .055993

0.055733 .0.55483 .055229 .054974 .054719 .054465 .0.54210 .053955 .05.3701 .053446

0.053192 .052937 .052682 .052128 .052173 .051919 .051665 .051410 .051156 .050901

0.050647 .050392 .050138 .049834 .049629 .049375 .049121 .043367 .048612 .048358

0.043104 .047850 .047595 .047341 .047037 .046333 .046579 .046325 .046071 .045817 .045563

M.

60 59 53 57 56 55 54 53 52 51

50 49 43 47 46 45 44 43 42 41

40 39 38 37 36 35 34 33 32 31

30 29 28 27 26 25 24 23 22 21

20 19 13 17 16 15 14 13 12

ir

10 9 8 7 6 5 4 3 2 1 0

Tang. M.

1310

403

216

430

TABLE XIII. LOGrARlTHMlC SINES,

1370

M.

0 1

2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18 19

20 21 22 23 24 25 26 27 23 29

30 31 i 32 33 34 35 3f3 37 3S 39

40 41 42 43 44 45 46 47 43 49

50 51 52 53 51 55 56 57 53 59 60

M.

i3a^

Sine.

9.825511 .825651 .825791 .825931 .826071 .826211 .826351 .826491 .826631 .826770

9.826910 .827049 .827189 .827328 .827467 .827606 .827745 .827384 .823023 .823162

9.S2S301 .828439 .823578 .823716 .828855 .828993 .829131 .829269 .829407 .829.545

9.S29633 .829321 .829959 .830097 .830234 830372 .830509 .830646 .83)784 .8.30921

9. 33! 058 .831195 .831.332 .831469 .831606 .831742 .831879 .832015 .832152 .832233

9.832425 .832561 .832697 .832333 .832969 .8.33105 .833241 .833377 .833512 .833643 .833783

Cosine.

D. v.

2.34 2.31 2.33 2.33 2.33 2.33 2.-33 2.-33 2.-33 2.33

2.32 2.32 2.32 2.32 2.-32 2.32 2.-32 2.31 2.31 2.31

2.31 2.31 2.31 2.31 2.31 2.30 2.30 2.30 2.30 2.30

2.30 2.30 2.29 2.29 2.29 2.29 2.29 2.29 2.29 2.29

2.23 2.23 2.23 2.23 2.23 2.23 2.23 2.27 2.27 2.27

2.27 2.27 2.27 2.27 2.27 2.26 2.26 2.26 2.26 2.26

D. 1".

Cosine.

9.871073 .870960 .870346 .870732 .870613 .870504 .870390 .870276 .870161 .870047

9.869933 .869818 .869704 .869539 .869474 .869-360 .869245 .8691-30 .869015 .863900

9-863735 .863670 .868555 .863440 .863324 .863209 .863093 .867978 .867862 .867747

9.867631 .867515 .867399 .867233 .867167 .867051 .8669-35 .866319 .866703 .866586

9.866470 .866353 .866237 .866120 .866004 .865387 .865770 .86-5653 .86.5536 .86-5419

9-86-5302 .865185 .865063 .8&4950 .864333 .864716 .864-593 .864431 .864363 .864245 .864127

Sine.

D. 1".

1.90 1.90 1.90 1.90 1.90 1.90 1.90 1.90 1.91 1.91

1.91 1.91 1.91 1.91 1.91 1.91 1.91 1.92 1.92 1.92

1.92 1.92 1.92 1.92 1.92 1.92 1.93 1.93 1.93 1.83

1.93 1.93 1.93 1.93 1.93 1.94 1.94 1.94 1.94 1.94

1.94 1.94 1.94 1 94 1.95 1.95 1.95 1.95 1.95 1.95

1.95 1.95 1.95 1.96 1.96 1.96 1.96 1.96 1.96 1.96

D. 1".

Tang.

9.9-54437 .9-54691 .9.54946 .9-55200 -9554-54 .955703 .9-55961 .9-56215 .956469 .9-56723

9.956977 .957231 .957435 .957739 .957993 .953247 .953500 .953754 .959003 .959262

9.9-59516 .9-59769 .960023 .960277 .960530 .960784 .961033 .961292 .961545 .961799

9.9620-52 .962306 .962560 .962313 .963067 .963320 .963574 .963323 .964031 .964335

9-964583 .964342 .96.5095 .965349 .965602 .965355 .966109 .966362 .9666.6 .966369

9.967123 .967376 .967629 .967333 .963136 .963339 .963643 .963396 .969149 .969403 .969656

Cotang.

D. 1".

4.23 4.23 4.23 4.23 4.23 4.23 4.23 4.23 4.23 4.23

4.23 4.23 4.23 4.23 4.23 4.23 4.23 4.23 4.23 4.23

4.23 4.23 4.23 4.23 4.23 4.23 4.23 4.23 4.23 4.23

4.23 4.23 4.23 4.23 4.23 4.23 4.23 4.23 4.23 4.23

4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22

4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22

D. 1'.

Cotang.

0.045563 .045309 .04.5054 .044800 .044546 .044292 .044039 .0^43735 .043531 .043277

0.04.3023 .042769 .042515 .042261 .042007 .041753 .041.500

.041246 .040992

0.040484

41 40

.040231

39

.039977

33

.039723

37

.039470

36

.039216

35

.033962

34

.038703

33

.033455

32

.033201

31

0.037943

30

.037694

29

.037440

23

.037187

27

.036933

26

.036630

25

.036426

24

.036172

23

.035919

22

.035665

21

0.03-5412

20

.035153

19

.034905

18

.034651

17

,034393

16

.0-341-15

15

.0-33391

14

.033633

13

.033334

12

.033131

11

0-032377

10

.032624

9

.0.32371

8

.032117

7

.031864

6

.031611

5

.0313-57

4

.031104

3

.0-30351

2

.030597

1

.030344

0 M

Tang

47'

COSINES, TANGENTS, AND COTANGENTS.

430

2n

M.

0 1 2 3 4 5

e

7

Sine.

10 11 12 13 14 15 16 17 13 19

20 21 22 23 24 25 26 27 28 29

30 31 32 33 34 35 36 37 3S 39

40 41 42 43 44 45 46 47 48 49

50 51 52 53 54 55 56 57 58 59 GO

D. 1".

9.833783 .833919 .834054 .834189 .834325 .834460 .831595 .834730 .834365 .834999

9.835134 .835269 .835403 .835r,.3S .8356:2 .835807 .835941 .836075 .836209 .836313

9.836477 836611 .836745 .836378 .837012 .837146 .837279 .837412 .837546 ,837679

9.837812 .837945

.833078 .833211 .833344 .833477 .833610 .833742 .833375 .839007

9.839140 .839272 .839404 .839536 .839663 .839800 .839932 .840064 .840196 .840323

9.840459 .840591 .840722 .840854 .840985 .841116 .841247 .841373 .841509 .841640 .&il771

M.

Cosine.

Cosine.

2.26 2.26 2.25 2.25 2.25 2.25 2.25 2.25 2.25 2.25

2.24 2.24 2.24 2.24 2.24 2.24 2.24 2.23 2.23 2.23

2.23 2.23 2.23 2.23

2.23 2.22 2.22 2.22 2.22 2.22

2.22 2.22 2.22 2.21 2.21 2.21 2.21 2.21 2.21 2.21

2.21 2.20 2.20 2.20 2.20 2.20 2.20 2.20 2.19 2.19

2.19 2.19 2.19 2.19 2.19 2.19 2.18 2.18 2.18 2.18

D. 1".

9.864127 .864010 .863392 .863774 .863656 .863533 .863419 .863301 .863183 .863064

9.862946 .862827 .S627(.9 .662590 .862471 .862353 .862234 .862115 .861996 .861877

9.861758 .861638 ^61519 .861400 .861230 ,861161 .861041 ,860922 ,860302 .860632

9.860562 .860442 .860322 .860202 .860082 .859962 .859842 .859721 .859601 .859480

9.859360 .859239 .859119 ,858998 .853877 ,858756 .858635 .858514 .858393 ,858272

9.858151 .858029 .857908 .857786 .857665 .857543 .857422 .857300 .857173 .857056 .856934

D. 1".

Tang.

1.96 1.97 1.97 1.97 1.97 1.97 1.97 1.97 1.97 1.97

1.93 1.93 1.93 1.93 1.98 1.98 1.98 1.98 1.98 1.99

1.99 1.99 1.99 1.99 1.99 1.99 1.99 2.00 2.00 2.00

2.00 2.00 2.00 2.00 2.00 2.00 2.01 2.01 2.01 2.01

2.01 2.01 2.01 2.01 2.02 2.02 2.02 2.02 2.02 2.02

2.02 2.02 2.02 2.03 2.03 2.03 2.03 2.03 2.03 2.03

Sine.

D. 1".

9.969656 .969909 .970162 .970416 .970669 .970922 .971175 .971429 .971682 ,971935

9.972188 ,972441 .972695 .972943 .973201 .973454 .973707 .973960 .974213 ,974466

9.974720 ,974973 ,975226 ,975479 .975732 .975935 .976233 .976491 .976744 .976997

9.977250 ,977503 ,977756 ,978009 .978262 .978515 .978763 .979021 .979274 .979527

9.979730 .980033 ,980286 .980533 .980791 .981044 .981297 ,981550 ,981803 ,932056

9.982309 .9S2562 .932314 .933067 .983320 .933573 .983326 .934079 .984332 .984534 .934337

D. 1". Cotang.

4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22

4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22

4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22

4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22 4.22

4.22 4.22 4.22 4.22 4.22 4.21 4.21 4.21 4.21 4.21

4.21 4.21 4.21 4.21 4.21 4.21 4.21 4.21 4.21 4.21

Cotang.

0.030344 .030091 .029833 .029584 .029331 .029078 .028825 .028571 .028318 .028065

0.027812 .027559 ,027305 ,027052 ,026799 .026546 .026293 .026040 .025787 .025534

0.025280 .025027 .024774 ,024521 .024263 ,024015 ,023762 .023509 .023256 .023003

0.022750 .022497 .022241 .021991 .021738 .021435 .021232 .020979 .020726 .020473

0.020220 .019967 .019714 .019462 .019209 .018956 .018703 ,018450 .018197 ,017944

0.017691 ,017438 ,017186 ,016933 .0166-^0 ,016427 ,016174 .015921 .015663 .015416 .015163

M.

60

59 58 57 56 55 54

D. 1".

Taug.

50 49 48 47 46 45 44 43 42 41

40 39 38 37 36 35 34 33 32 31

30 29 28 27 26 25 24 23 22 21

20 19 18 17 16 15 14 13 12 11

10

9 8 7 6 5 4 3 2 1 0

M.

1 33 J

46C

218

440

TABLE XIII.

LOGARITHMIC SINES, &C.

1354

M.

0 I 2 3 4 5 6 7 8 9

10 II 12 13 14 15 16 17 18 19

20 21 22 23 24 25 26 27 2S 29

30 31 32 33 34 35 36 37 33 39

40 41 42 43 44 45 46 47 43 49

50 51 52 53 54 55 56 57 53 59 60

Sine.

D. 1".

9.34] 771 .841902 .842033 .842163 .842294 .842424

" .842555 .842635 .842315 .842946

9.843076 .843206 .843336 .84.3466 .843595 .843725 .843355 .843934 .844114 .844243

9.844372 .844502 .844631 .844760 .844889 .845018 .845147 .845276 .84.5405 .84.55.33

9.845662 .845790 .84.5919 .846047 .846175 .846304 .846432 .846558 .846638 .846316

9.346944 .847071 .547199 .847327 .3474.54 .847532 .847709 .847836 .347964 .843091

9.848213 .843345

.843472 .843599 .813726 .843352 .843979 .849106 .8492-32 .849.359 .849435

2.13 2.18 2 18 2.13 2.17 2.17 2.17 2.17 2.17 2.17

2.17 2.17 2.16 2.16 2.16 2.16 2.16 2.16 2.16 2.16

2.15 2.15 2.15 2.15 2.15 2.15 2.15 2.15 2.14 2.14

2.14 2.14 2.14 2.14 2.14 2.14 2.13 2.13 2.13 2.13

2.13 2.13 2.13 2.13 2.12 2.12 2.12 2.12 2.12 2.12

2.12 2.12 2.11 2.11 2.11 2.11 2.11 2.11 2.11 2.11

Cosine.

9.3.56934 .856312 .856690 .856-568 .856446 .856323 .856201 .8.56078 .85.59.56 .855333

9.8.5.5711

.85.5533 .855465 .855342 .8-55219 .855096 .8.54973 .8543.50 .8.54727 .854603

9.8.54430 .8.543-56 .854233 .8-54109 .8.53936 .853362 .8.53733 .853614 .853490 .853366

9.35-3242 .8-53118 .852994 .352369 .352745 .852620 .852496 .852371 .852247 .852122

9.851997 .851372 .851747 .851622 .851497 .851372 .851246 .851121 .850996 .850370

9.850745 .850619 .3.50493 .850363 .8-50242 .8.50116 .849990 .849364 .849733 .849611 .849435

D. 1".

M. I Cosine. I D. 1". | Sine. D. 1". Cotang. | D. 1".

2.03 2.04 2.04 2.04 2.04 2.04 2.04 2.04 2.04 2.04

2.05 2.05 2.05 2.05 2.05 2.05 2.05 2.05 2.06 2.06

2.06 2.06 2.06 2.06 2.06 2.06 2.06 2.07 2.07 2.07

2.07

2.07 2.07 2.07 2.07 2.03 2.03 2.03 2.03 2.03

2.03 2.03 2.03 2.09 2.09 2.09 2.09 2.09 2.09 2.09

2.09 2.10 2.10 2.10 2.10 2.10 2.10 2.10 2.10 2.11

Tang.

9.934337 .985090 .935343 .93.5.596 .935343 .936101 .936-3-54 .936607 .936360 .937112

9.937365 .937618 .987871 .938123 .933376 .933629 .933332 .939134 .939337 .939640

9.939393 .990145 .990393 .990551 .990903 .9911.56 .991409 .991662 .991914 .992167

9.992420 .992672 .992925 .993178 .993431 .99.3633 .9939:36 .994139 .994441 .994694

9.994947 .995199 .995452 .995705 .995957 .996210 .996463 .996715 .996963 .997221

9.997473 .997726 .997979 .993231 .9934*4 .993737 .993939 .999242 .999495 .999747

0.000000

D. 1".

4.21 4.21 4.21 4.21 4.21 4.21 4.21 4.21 4.21 4.21

4.21 4.21 4.21 4.21 4.21 4.21 4.21 4.21 4.21 4.21

4.21 4.21 4.21 4.21 4.21 4.21 4.21 4.21 4.21 4.21

4.21 4.21 4.21 4.21 4.21 4.21 4.21 4.21 4.21 4.21

4.21 4.2) 4.21 4.21 4.21 4.21 4.21 4.21 4.21 4.21

4.21 4.21 4.21 4.21 4.21 4.21 4-21 4.21 4.21 4.21

Cotang.

0.015163 .014910 .0146-57 .014404 .0141.52 .013399 .013646 .013393 .013140 .012388

0.012635 .0123S2 .012129 .011877 .011624 .011.371 .011118 .010366 .010613 .010360

0.010107 .009355 .009602 .009349 .009097 .003844 .003591 .003333 .003036 .007833

0.007530 .007323 .007075 .006322 .006569 .006317 .006064 .005811 .00.5559 .005306

0.005053 .004301 .004.543 .004295 .004043 .003790 .003537 .003235 .003032 .002779

0.002.527 .002274 .002021 .001769 .001516 .001263 .001011 .000758 .000.505 .000253 .000000

Tang.

M.

60 59 53 57 56 55 54 53 52 51

50 49 48 47 46 45 44 43 42 41

40 39 38 37 36 35 34 33 32 31

30 29 28 27 26 25 24 23 22 21

20 19 18 17 16 15 14 13 12 II

10 9 8 7 6 5 4 3 2

I 0

M.

134a

i'i

TABLE XIV.

NATURAL SINES AND COSINES

i-^{}

TABLE

XIV.

NATURAL SINES AND COSINES.

M.

0

,

= il

00

i^

}c~^ \ a^

*

^

1 M.

60

Sine. .00000

Cosin.

Sine.

Cosin.

Sine.

Cosin.

Sine.

Cosin.

Sine.

Cosin.

.99756

One.

.01745

.99985

.03490

.99939

.0.5234

.99863

.06976

1

.00029

One.

.01774

.999S4

.03519

.99933

.05263

.99-61

.07005

.99754

59

2

.00058

One.

.01303

.99934

.03-543

.99937

.0.5292

.99360

.07034

.99752

58

3

.0JJS7

One.

.01332

.99933

.03577

.99936

05321

.99358

.07063

.99750

57

4

.00116

One.

.01362

.99933

.03606

.99935

.05-350

.99357

.07092

.99748

56

5

.00145

One.

.01391

.99932

.03635

.99934

05379

.99355

.07121

.99746

55

6

.00175

One.

.01920

.99932

.C3661

.99933

.0-5403

.99354

.07150

.99744

54

7

.00204

One.

.01919

.99931

.03693

.99932

.05437

.99852

.07179

.99742

5c

8

.00233

One.

.01973

.99930

.03723

.99931

.0-5466

.99351

.07203

.99740

52

9

.00262

One.

.02097

.99930

.03752

.99930

.0.5495

.99349

.07237

.99738

51

10

.00291

One.

.02036

.99979

.03781

.99929

.05524

.99847

.07266

.99736

50

11

.00320

.99999

.02065

.99979

.03310

.99927

.05553

.99346

.07295

.99734

49

12

.00349

.99999

.02094

.99973

.0.38.39

.99926

.0-5532

.99344

.07324

.99731

48

13

.00373

.99999

.02123

.99977

.03363

.99925

.05611

.99342

.073.53

.99729

47

14

.00407

.99999

.021-52

.99977

.03397

.99924

.05640

.99341

.07332

.99727

46

15

.00436

.99999

.02131

.99976

.03926

.99923

.05669

.993.39

.07411

.99725

45

16

.00463

.99999

.02211

.99976

.03955

.99922

.05698

.99333

.07440

.99723

44

17

.00495

.99999

.0221'!

.99975

.0-3934

.99921

.05727

-99336

.07469

.99721

43

15

.03524

.99999

.02269

.99974

.04013

.99919

.0-5756

.99334

.07493

.99719

42

19

.00553

.99993

.02293

.99974

.04042

.99918

.05785

.998.33

.07527

.99716

41

20

.00532

.99993

.02327

.99973

.04071

.99917

.0-5814

.99831

.07556

.99714

40

21

.00611

.99993

.02356

.99372

.04100

.99916

.05344

.99329

.07535

.99712

39

22

.00640

.99993

.02335

.99972

.04129

.99915

.05873

.99827

.07614

.99710

33

23

.03660

.99993

.02414

.9p971

.04159

.99913

.05902

.99326

.07643

.99708

37

21

.00693

99993

.02443

.99970

.04183

.99912

.05931

.99-24

.07672

.99705

36

25

.00727

.99997

.02472

.99969

.04217

.99911

.05960

.99322

.07701

.99703

35

26

.00756

.99997

.02.501

.99969

.04246

.99910

.05989

.99321

.07733

.99701

^

27

.00785

.99997

.02530

.99963

.04275

.99909

.06018

.99319

.07759

.99699

33

2S

.00314

.99997

.02.560

.99967

.04804

.99907

.06047

.99317

.07783

.99696

32

29

.00314

.99996

.02589

.99966

.04333

.99906

.06076

-99315

.07817

.99694

SI

30

.O0S73

.99996

.02613

.99966

.04362

.99995

.06105

.9981-3

.07846

.90692

30

31

00502

.99996

.02647

99965

.04391

.99904

.061.34

.99312

.07875

.9:^i

29

32

.00931

.99996

.02676

.99964

.04420

.99902

.06163

.99310

.07904

.99687

28

33

.00960

.99995

.02705

.99963

.04449

.99901

.06192

.99333

.07933

.99635

27

34

.009S9

.99995

.02734

.99963

.04478

.99900

.05221

.99806

.07962

.99633

26

35

.0101.3

.99995

.02763

.99962

.04.507

.99393

.06250

.99804

.07991

.99680

25

36

.01047

.99995

.02792

.99961

.045.36

.99397

.06279

.99-03

.08020

.99678

24

37

.01076

.99994

.02321

.99960

.04-565

.99396

.06303

.99-01

.08049

.99676

23

3S

.01105

.99994

.02350

.99959

.04594

.99394

.06337

.99799

.03073

.99673

22

39

.01134

.99994

.02379

.999.59

.04623

.99393

.06.566

.99797

.03107

.99671

21

40

.01164

.99993

.02903

.99953

.04653

.99392

.06395

.99795

.08136

.99668

20

41

.01193

.93993

.02933

.99957

.04632

.99390

.06424

.99793

.03165

.99666

19

42

.01222

.99993

.02967

.999.56

.04711

-99339

.064-53

.99792

.08194

.99664

18

43

.01251

.99992

.02996

.99955

.04740

.99333

.06432

.99790

.03223

-99661

17

44

.01230

.99992

.03025

.99954

.04769

.99336

.06511

.99788

.08252

.99659

16

45

.01309

.99991

.03054

.99953

.04798

.99335

.06540

.99736

.08281

-99657

15

46

.01.333

.99991

.0.3033

.99952

.04327

.99333

.06569

.99734

.08310

-99654

14

47

.0136/

.99991

.03112

.99952

.048.56

.99332

.06598

.99782

.033.39

.99652

13

4S

.01396

.99990

.03141

.99951

.04335

.99331

.(,'6627

.99780

.03.363

.99649

12

49

.01425

.99930

.03170

.99950

.04914

.99379

.1)66-56

.99773

.03397

.99647

11

50

.01454

.99939

.03199

.99949

.04943

.99-73

.06635

.99776

-03426

.99644

10

5[

.01433

.99939

.03223

.99943

.04972

.99376

.06714

.99774

.08455

.99642

9

52

.01513

.99939

.03257

.99947

.0-5001

.99375

."6743

.99772

.08434

.996.39

8

53

.01542

.99933

03236

.99946

.05030

.99373

.06773

.99770

.08513

.99637

/

54

.01.571

.99933

.03316

.99945

.0.5059

.99372

.06-02

.99763

.03542

.99635

6

55

.01600

.99937

03345

.99944

.05083

.99370

M<31

.99766

.08.571

.99632

5

56

.01629

.99937

.03374

.99943

.05117

.99369

.06-^60

.99764

.08630

.99630

4

57

.01653

.99936

.0.3403

.99942

.05146

.99-67

.06339

.99762

.08629

.99627

3

5^

.01637

.99936

.03432

.99941

.05175

.99S6S

.06918

.99760

.08653

.99625

2

59

.01716

.99935

.03461

.99940

.05205

.99364

.06947

.997.53

.08687

.99622

1

60 M.

.01745

.99935

.03490 Cosin.

.99939 Sine.

.0-5234

.99363

-06976

.997.56 Sine.

.08716 Coein.

.99619 Sine.

0 M.

Cosin.

Sine.

Cosin.

Sine. Cosin.

8i

P

882 1

87^ 1 863

85° 1

TABLE XTV. x^ATURAL SlIs'ES AND COSINES.

221

0 I 2 3

6

7

8

9 10 11 12 13 14 15

16 17 IS 19 20 21 22 23 24 25 26 27 2S 29 30

31 32 33 34 35 36 37 3S 39 40 41 42 43 44 45

l!)

47 4S 49 50 51 52 53 54 55 56 57 5S 59 60

m7

Sine- Cosin.

.ostTo'

.0S745|

.0S771

.OSSO:}

.0.SS31

.OSSG )

.03S^9

.039 1 S

.OS947

.nS976

.09)1)5

.09[)3l

.09063

.09092

.09121

.091.50

63

.09179 .092)55 .092:^7 .(I926G .09295 .09321 .09353 .093S2 .09411 .09440 .09469 .0949S .09527 .09556 .09535

.09614 .09642 .09671 .09700 .09729 .0975S .097S7 .09816 .09345 .09374 .09903 .09932 .09961 .09990 .10019

.99619 .99617 .99614 .99612 .99609 .99607 .99614 .99602 .99599 .99596 .99594 .99591 .9953 S .99536 .9953 5 .99530

.99573 .99575 .99572 .99570 .99567 .99564 .99562 .99559 .99556 .99553 .99551 .99543 .99545 .99542 .99540

.99537 .99534 .99531 .99523 .99526 .99523 .99520 .99517 .99514 .99511 .99503 .99506 .99503 .99500 .99497

70

8^

Siue. Cosin. | Sine. : Cosin. Sine. Cosin

.10043 .10077 .10106 .10135 .10164 .10192 .10221 .10250 .10279 .10313 .10337 .10366 .10395 10424 10453

.99494- .99491 .99433 .99435 .99432 .99479 .99476 .99473 .99470 .99167 .99461 .99461 .99453 .99455 .99452

10453

1043 i

10511

10'.4')

10569

10597

10626

10655

10634

10713

10742

.10771

.1030: 1

.10 52 J

.10 553

.10^37

.10916 .10945 .10973 .11002 .11031 .11060 .11039 .11113 .11147 .11176 .11205 .11234 .11263 .11291 .11320

.11349 .11373 .11407 . 1 1436 .11465 .11494 .11523 .115.52 .11530 .11609 .11633 .11667 .11696 .11725 .11754

.99452

.99119 .99446 .99143 .99440 .99437 .99434 .99131 .99128 .9.)l2l .99121 .99113 .99415 .99112 .99409 .99406

.99402 .991H9 .99396 .9;) !9 ! .99390 .993>6 .99333 .99330 .99377 .99374 .99370 .99367 .99364 .99360 .99357

.99354 .99351 .99347 .99314 .99341 .99337 .99331 .99331 .99327 .99324 .99320 .99317 .99314 .99310 .99307

Cosin. Sine

8lo

11733 11312 1 1340 11369 11893 .11927 11956 11935 12914 .12013 .12071 .12100 .12129 .121.53 .12137

.99303 .99300 .99297 .99293 .99299 .99236 .99233 .99279 .99276 .99272 .99269 .99265 .99262 .99253 .992.55

Cosin. Sine.

833

12137

12216!

12245

12274

I23i)2 ,12331 .12369 .12339 .12413 .12447 .12476 .12504 .12533 .12562 .12591 .12620

.12619 .12673 .12706 .12735 .12764 .12793 .12322 .12351 .12330 .12908 .12937 .12966 12995 .13024 .13053

.1303! .13110 .13139 .13163 .13197 .13226 .1.3251 1.3233 ,13312 .13311 .13370 .1.3399 .13427 .134.56 .13485

.13514 .13543 .13.572 .13600 .13629 .13653 .13637 .13716 .13744 .13773 .13302 13831 .13360 .13339 .J3927

Cosin. Sine

833"

.99251

.99243 ,

.99244 '

.99241) '

.99237

.99233

.99230

.99226,

.99222

.99219

.99215

.99211

.99208

.99204

.99200

.99197 .99193 .99139 .99136 .99132 .99173 .99175 .99171 .99167 .99163 .99160 .99156 .99152 .99143 .99144

.99141 .99137 .99133 .99129 .99125 .99122 .99113 .99114 .99110 .99106 .99102 .99098 .99994 .99091 .99037

.99033 .99079 .99075 .99071 .99067 .99063 .99059 .99055 .99051 .99047 .99043 .99039 .99035 .99031 .99027

13917 13946 13975 14i)'4 14033 14061 11119) 14119 1414s ,14177 ,14205 ,142.34 .14 263 .14292 .14320 .14349

.14373 .14407 .14136 .1446} .14493 .14.522 .14551 .14.530 . 14603 .14637 .14666 .14695 .14723 .14752 .14731

.14310

.14333

.14367

.14396

14925

14954

14932

1.5011

1.5040

1.5069

,15097

,15126

,151.55

,15134

.15212

,1.5241 .15270 .15299 .15327 .1.53.56 .1.5335 .15414 .15442 .15471 15500 .15529 .155.57 .15586 .1.5615 .15643

90

.99027 .99023 .99019 .99015 .99)11 .990' )6 .99002 .93993 .9>994 .9>990 .9 -•9 -6 .9>9^2 .93973 .93973 .93969 .9^965

.93961

.93957

.93953

.9-^913

.9^941

.93940

.9-936

.93931

.9>927

.93923

.93919

.93914

.93910

.93906

.939:12

.93397 .93393 .93339 .933S4 .93330 .93376 .93871 .9,3867 .98363 .93.353 .988.54 .98.349 .93,345 .93,341 .93336

.93332 .93827 .93823 .9,3313 .98314 .93309 .93305 .93300 .93796 .93791 .98737 .987,32 .9,8773 .93773 .93769

Sine. I Cosin. M

J5643 .93769 .1.5672 .9,8764 .1.57111 .98760 .15730 .93755 .1575> .93751 .15737 .9.>746 .1.5316 .9,3741 .153451.93737 .1.5373 '.93732 .15902 .93723 .1.5931 .93723 .159.59 .93713 .1.5933 .93714 .16017 .93709 .16046 .93704 .16074 .93700

Cosin. Sine

8I0

16l!l3 16132 16160 16139 1621 ,16246 ,16275 ,16304 .16333 ,16361 ,16.390 ,16419 .16447 .16476 .16505

.16533 .16562 .16591 .16620 .16643 .16677 .16706 .167.34 .16763 .16792 .16320 .16349 .16873 .16906 .16935

.16964 .16992 .17021 .17050 .17073 .17107 ,17136 .17164 .17193 .17222 .17250 .17279 .17.303 .17336 .17365

60 59 53 57 56 55 54 53 52 51 50 49 43 47 46 45

44 43

93695

93690

9,3636 42

.9,3631 41

.93676 40

.93671 39

.95667

.93602

.98657

.9,3652

.9.3613

.9,3643

.936:33

.93633

.93629

Cosin.

93624

93619

93614

93609

98604

93600

9,359.'

,9.8.590

,9353i:

,9,3580

,93575

.9,3570

.93565

,93561

,93556

.9,3551

.93.546

.93541

.93536

.93531

.93.526

.93521

.93516

.98511

.93.506

.98501

.9,8496

.93491

.93436

.93431

38 37 36 35 34 33 32 31 30

Sine.

803

29 23 27 26 25 24 23 22 21 20 !9 13 17 16 15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

J)

M.

222

TABLE XK

i\ATU:iAL bi:sKS A.\D COSINES.

M.

0

103 1

110

130

133

140

M.

Sine. .17365

Cosin.

.93431

Sine.

Cosin. .93163

Sine.

Cosin.

.97815

Sine.

Cosin. .97437

Sine.

Cosin.

.19031

.20791

.22495

.24192

.970:30 60

I

.17393

.93476

.19109

.93157

.20820

.97809

.22523

.97430

.24220

.97023 .59

2

.17422

.93471

.19133

.93152

.20348

.97803

.225.52

.97424

.24249

.97015

53

3

.17451

.93466

.19167

.93146

.20377

.97797

.22.530

.97417

.24277

.97008

57

4

.17479

.93461

.19195

.93140

.20905

.97791

.22603

.97411

.24305

.97001

56

5

.17503

.93455

.19224

.931.35

.20933

.97734

.22637

.97404

.24333

.98994

55

6

.17537

.934.50

.19252

.93129

.20962

.97778

.22665

.97393

.24-362

.96987

54

7

. 1 7565

.93445

.19231

.98124

.20990

.97772

.22693

.97.391

.24390

.96980

53

8

.17594

.93440

.19309

.93113

.21019

.97766

.22722

.97334

.24418

.96973

52

9

.17623

.93435

.193.33

.93112

.21047

.97760

.22750

.97373

.24446

.96966

51

10

.17651

.93430

.19-366

.93107

.21076

.97754

.22773

.97371

.24474

.96959

50

11

.17630

.93425

.19.395

.9310!

.21104

.97748

.22307

.97.365

.24503

.96952

49

12

.17703

.93420

.19123

.93096

21132

.97742

.22335

.97.3-58

.21531

.96945

48

13

.17737

.93414

.19452

.93090

.21161

.97735

.22363

.97351

.24559

.96937

47

14

.17766

.93409

.19431

.93034

.21189

.97729

.22^92

97345

.24587

.96930

46

15

.17794

.934 >1

.19509

.93079

.21218

.97723

.22920

.97:3:38

.24615

.96923

45

16

.17323

.98399

.19533

.93073

.21246

.97717

.22948

.97.331

.24644

.96916

44

U

.173.52

.9.3394

.19.566

.93067

.21275

.97711

.22977

.97325

.24672

.96909

43

13

.17330

.93339

.19.595

.93;i0l

.21303

.97705

.23005

.97318

.24700

.96902

42

19

.17909

.93333

.19623

.93056

.21331

.97693

.230.33

.97311

.24723

.96394

41

20

.17937

.93373

.19652

.93050

.21360

.97692

.23062

.97304

.24756

.96387

40

21

.17966

.93373

.19630

.93044

.21338

.97636

.23090

.97293

.24734

.96880

39

22

.17995

.93363

.19709

.93039

.21417

.97630

.23118

.97291

.24313

.96373

33

23

.13023

.93362

.19737

.930-33

.21445

.97673

.23146

.97234

.24841

.96866

37

21

.130.52

.93357

.19766

.93027

.21474

.97667

.23175

.97278

.24869

.96858

36

25

.13031

.93352

.19791

.93021

.21502

.97661

.23203

.97271

.24897

.96851

35

26

.13109

.93347

.19323

.93016

.215.30

.976.55

.2.3231

.97264

.24925

.96844

.34

27

.131.33

.93341

.19351

.93010

.21559

.97648

.23260

.97257

.24954

.96337

33

2S

.13166

.98336

.19330

.93004

.21587

.97642

.23233

.97251

.24982

.96329

32

1

29

.13195

.93.331

.19903

.97998

.21616

.976.36

.23316

.97244

.25010

.96322

31

30

.13224

.93.325

.199-37

.97992

.21644

.97630

.23:345

.972:37

.25033

.96315

30

31

.132.52

.93.320

.19965

.97937

.21672

.97623

.2.3373

.972.30

.25066

.96807

29

32

.13231

.93315

.19994

.97931

.21701

.97617

.23401

.97223

.25094

.96300

28

33

.13309

.93310

.20022

.97975

.21729

.97611

.2-3429

.97217

.25122

.96793

27

34

.13333

.93.301

.20051

.97969

.21758

.97604

.2:34-58

.97210

.25151

.96786

26

35

.13367

.9.3299

.20079

.97963

.21786

.97593

.23136

.97203

.25179

.96778

25

36

.13:395

.93294

.21103

.97953

.21814

.97592

.2:3514

.97196

.25207

.96771

24

37

.13424

.93238

.201.36

.97952

.21343

.97535

.2.3-542

.97189

.2.52.35

.96764

23

33

.1^.52

.93283

.20165

.97946

.21871

.97579

.2:3571

.97132

.2.5263

.96756

22

39

.13431

.93277

.20193

.97940

.21899

.97573

.2:3.599

.97176

.2.5291

.96749

21

40

.18509

.93272

.20222

.979.34

.21923

.97566

.23627

.97169

.2.5320

.96742

20

41

.13.538

.93267

.20250

.97923

.219.56

.97560

.2:3656

.97162

.25348

.96734

19

42

.18567

.93261

.20279

.97922

.21935

.97553

.23G34

.97155

.25376

.96727

18

43

.13595

.932.56

.20307

.97916

.22013

.97547

.2:3712

.97143

.2.5404

.96719

17

44

.13624

.93250

.20.3.36

.97910

.22041

.97541

.23740

.97141

.2.5432

.96712 16|

45

.13652

.93245

.20364

.97905

.22070

.97534

.23769

.971.34

.25460

.96705

15

46

.18631

.93210

.20393

.97399

.22093

.97523

.2.3797

.97127

.2-5483

.96697

14

47

.13710

.93234

.20421

.97893

.22126

.97521

.23325

.97120

.25516

.96690

13

43

.13733

.93229

.20450

.97337

.221.55

.97515

.2:3353

.97113

.2.5.545

.96632

12

49

.13767

.93223

.20478

.97831

.22183

.97503

2-3332

.97106

.25573

.96675

11

50

.18795

.93213

.20.507

.97375

.22212

.97502

.23910

.97100

.2-5601

.96667

10

51

.13824

.93212

.20.535

.97869

.22240

.97496

.2:3935

.97093

.25629

.96660

9

52

.188.52

.93207

.20.563

.97863

.22263

.97439

.2:3966

.97036

.25657

.96653

8

53

.18331

.93201

.20.592

.97357

.22297

.97433

.23995

.97079

.2.5635

.96645

7

54

.18910

.93196

.20620

.97851

.22325

.97476

.24023

.97072

.25713

.96633

6

55

.18933

.93190

.20649

.97345

.22.353

.97470

.21051

.97065

.25741

.96630

5

56

.18967

.98135

.20677

.97339

.22332

.97463

.24079

.9705S

.25769

.96623

4

57

.18995

.93179

.20706

.97833

.22410

.974.57

.24103

.97051

.25793

.96615

3

53

.19024

.93174

.207.34

.97827

.22438

.974.50

.24136

.97044

.25826

.96603

2

59

.19052

.93163

.20763

.97321

.22467

.97444

.24164

.97037

.25854

.96600

1

60 M.

.19031

.93163

.20791

.97815

.22495

.97437

.24192

.97030

.25832

.96593

0 M.

Cosin.

Sine.

Cosin.

Sine.

Cosin.

Sine.

Cosir.

Sine.

Cosin.

Sine.

1

793 1

780 1

770 1

76C 1

7S

P

1

1

TABLE

XIV.

NATURAL

SIxNES AND COSINES.

ft <

wa

M.

0

150 1

163 1 170 1

183 1

19a 1

60

Sine.

.253 S2

Cosia.

Sine.

Ccsin. Sine. 1

Cosin.

.95630

Sine.

Cosin. .95106

Sine.

.32557

Cosin.

.96593

.27.564

.96126

.29237

.30902

,94552

1

.25910

.96535

.27592

.96118

.29265

.95622

-30929

.95097

.32584

.94542

59

2

.25933

.96578

.27620

.96110

.29293

.95613

.30957

.95088

.32612

.94.533

58

3

.25960

.96.570

.27648

.96102

.29321

.9-5605

.30985

.9.5079

.32639

.94.523

57

4

.25994

.90.562

.27676

.96094

.29343

.9.5596

.31012

.95070

.32667

.94514

56

5

.26022

.96555

.27704

.960S6

.29376

.95538

.31040

.95061

.32694

.94504

55

^ 6

.26050

.96547

.27731

.90078

.29404

.95579

.31063

.9-5052

.32722

.94495

54

7

.26079

.96.540

.27759

.96070

.29432

.95571

.31095

.95043

.32749

.94435

53

8

.26107

.965.32

.27787

.96062

.29460

.9-5562

.31123

.95033

.32777

.94476

52

9

.26135

.96.524

.27815

.90f)54

.29487

.95554

.31151

.95024

.32804

.94466

51

10

.26163

.96517

.27843

.96046

.29515

.95545

.31178

.95015

.32332

.94457

50

11

.26191

.90.509

.27871

.96037

.29543

.95536

.31206

.95006

.32859

.94447

49

12

.26219

.96502

.27899

.96029

.29571

.95523

.31233

.94997

.32837

.94438

48

13

.26247

.96494

.27927

.96021

.29599

.95519

.31261

.94988

.32914

.94423

47

14

.26275

.96436

.279.55

.96013

.29626

.95511

.31239

.94979

.32942

.94418

46

15

.26303

.96179

.27983

.96005

.290-54

.95502

.31316

.94970

.32969

.94409

45

16

.26331

.90171

.2301 1

.95997

.29032

.95493

.31344

.94961

.32997

.94.399

44

17

.26359

.96463

.23039

.95939

.29710

.95435

.31-372

.949.52

.3-3024

.94390

43

13

.263S7

.96456

.23067

.9-5981

.29737

.95476

.31399

.94943

.3.3051

.94380

42

19

.20415

.96443

.23095

.95972

.29765

.9.5467

.31427

.94933

.33079

.94370

41

20

.26443

.96440

.23123

.9-5964

.29793

.9.54.59

.31454

.94924

.33106

.94.361

40

21

.26471

.95433

.23150

.95956

.29821

.954-50

.31482

.94915

.33134

.94-351

39

22

.26500

.96425

.28178

.9.5943

.29349

.9-5441

.31510

.94906

.33161

.94.342

33

23

.26523

.96417

.23206

.95940

.29876

.9.5433

.31.537

.94897

.33189

.94332

37

24

.26556

.96410

.232.34

.95931

.29904

95424

.31565

.94383

.33216

.94.322

36

25

.26534

.964 )2

.23262

.95923

.29932

.95415

.31593

.94878

.33244

.94313

35

26

.26612

.96394

.23290

.9.5915

.29960

.9-5407

.31620

.94869

.33271

.94303

34

27

.26610

.963S6

.23318

.95907

.29987

.95398

.31648

.94860

.33293

.94293

33

2S

.26603

.96379

.23346

.9.5393

.30015

.9-5339

.31675

.94851

.33326

.94234

32

29

.26696

.96371

.23374

.9-5390

.30043

.95330

.31703

.94842

.33353

.94274

31

30

.26724

.96363

.23402

.95382

.30071

.95372

.31730

.94832

.33381

; 94264

30

31

.26752

.96355

.28429

.9.5374

.30093

.95363

.31758

.94823

.33408

.94254

29

32

.26780

.96347

.23457

.9-5365

.30126

.95354

.31786

.94814

.33436

.94245

2.8

33

.26303

.96340

.23435

.95357

.30154

.9.5345

.31813

.94805

.3-3463

.94235

27

34

.26836

.96332

.23513

.95849

.30182

.9-5337

.31841

.94795

.3-3490

.94225

26

35

.26364

.96324

.28541

.9-5341

.30209

.95.323

.31868

.94786

.33518

.94215

25

36

.26392

.96316

.28-569

.9.5332

.30237

.9-5319

.31896

.94777

.33.545

.94206

24

37

.2692 J

.96303

.23597

.95324

.30265

.95310

.31923

.94763

.3.3573

.94196

23

3S

.26943

.96301

.23625

.9-5316

..30292

.95301

.31951

.94753

.33600

.94186

22

39

.26976

.96293

.23652

.95807

.30320

.95293

.31979

.94749

.33627

.94176

21

40

.27004

.96235

.23630

.95799

.30348

.95234

.32006

.94740

.33655

.94167

20

41

.27032

.96277

.23703

.9.5791

.30376

.95275

.32034

.94730

.33632

.941.57

19

42

.2706'!

.96269

.237.36

.95732

.30403

.95266

.32061

.94721

.33710

.94147

18

43

.27033

.96261

.23764

.95774

.30431

.95257

..32039

.94712

.33737

.94137

17

44

.27116

.96253

.23792

.95766

.30459

.95243

.32116

.94702

.33764

.94127

16

45

.27144

.96246

.28320

.'^rjlDl

.30436

.95240

.32144

.94693

.33792

.94118

15

46

.27172

.96233

.23847

.95749

.30514

.95231

.32171

.94634

.33319

.94108

14

47

.27200

.90230

.23375

.95740

.30.542

.9-5222

.32199

.94674

.33346

.94098

13

4S

.27223

.96222

.23903

.95732

.30570

.9-5213

.32227

.94665

.33874

.94088

12

49

.27256

.96214

.23931

.95724

..30597

.9.5204

32254

.94656

.3-3901

.94078

11

50

.27234

.96206

.23959

.9.5715

.30625

.95195

.32232

.94646

.33929

.94068

10

51

.27312

,96193

.23937

.95707

.30653

.95186

.32.309

.94637

.33956

.940-58

9

52

.27340

.96190

.29015

.95693

.30630

.95177

.32.337

.94627

.3.39-3

.94049

8

53

.27363

.96182

.29042

.9509)

.30703

.95163

.32364

.94618

.3401 1

.940,39

7

54

.27.396

.96174

.29070

.9-5631

.307.36

.951.59

.32392

.94609

.34038

.94029

6

55

.27421

.96166

.29093

.95673

.30763

.95150

.32419

.94599

.34065

.94019

5

56

.27452

.96153

.29126

.9-5664

..30791

.95142

.32447

.94.590

.34093

.94009

4

57

.27430

.96150

.29154

.95656

..30319

.95133

.32474

.94580

..34,120

.93999

3

5S

.27503

.96142

.29132

.9.5617

.30346

.95124

.32502

.94571

.34147

.9.3989

2

59

.27536

.961.34

.29209

.95639

.SO 574

.95115

.32.529

.94.561

.34175

.93979

1

60 M.

.27.561 Cosin.

.96126 Sine.

.29237 Cosin.

.95630 Sine.

.30902 Cosin.

.95106

.32557

.94.552

.34202 Cosin.

.93969 Sine.

0 M.

Sine.

Cosin.

Sine.

7

40

730 733 1 710

703

5^24

TABLE XIV,

.NATURAL Sl^'ES AND COSINES.

M.

0

303

310

233

333

34:3

Sine.

.31211 >

1 Cosin.

Sine.

.358:37

Cosin.

Sine.

i Cosin.

Sine.

Cosin.

.92050

Sine.

Cosin. 1.91355

M.

.9.3^6 J

.9:3338

.37461

I.9271>

.-39LI73

.40674

60

1

.34229

! .93959

.35564

.93:348

.37483

1.92707

-39100

.92039

.40701 1

.91343

59

2

.34257

1 .93949

.35891

.93:337

.-37515

1.92697

-39127

.92028

.40727

.91:331

58

3

.:342>4

i.9393D

.3.59l>

.93:327

.37.542

.926-6

-.391-53

.92016

.40753

.91319

57

4

34311

1.93929

.33945

.93316

.37.569

.92675

.:39180

.92005

.40780

.91:307

.^6

5

.34339

.93919

.-35973

.933;»6

.37.595

.92664

.39207

.91994

.40=06

.91295

55

6

..34366

.93909

.36000

.9-3295

.:37622

.92653

.:392:34

.919-2

.40-33

.91283

54

7

.31-393

.93899

.36027

.9:32-5

.:37649

.92642

.:-926:)

.91971

.40560

.91272

53

8

.34421

.93889

..360.54

.93274

.37676

.92631

.3;J257

.919:59

.40886

.91260

52

9

.34445

.93879

.36051

.93264

.37703

.9262 )

.39314

.91948

.40913

.91248

51

10

.34475

.93?6J

.3610-

.932-53

.37731

.92609

.3;«41

.919:36

.409-39

.912.36

50

11

.34503

.93559

.-36135

.9:3243

.37757

.92598

.:39.367

.91925

.40966

.91224

49

12

.34530

.93549

.:36162

.932:52

.37784

.92587

.39.394

.91914

.40992

.91212

4S

13

.34357

.93539

..36190

.93222

.:378ll

.92576

.:39421

.91902

.41019

.9120(»

17

14

.345S4

.93529

.:35217

.9321 [

.37-35

.92-365

.3944-

.91891

.41045

.9118>

46

15

.31612

.93519

.:36244

.93201

.37865

.925:54

.-39474

.91879

.41072

.91176

45

16

.34639

.93-09

.:3627l

.93190

.37892

.92.543

.-39501

.9186=

.4109=

.91164

44

17

.34666

.937^9

.:36298

.93150

.37919

.92.3:32

.:3952?

.918:36

.41125

.91152

43

IS

.34694

.937->>9

.36:325

.9316J

.37946

.92321

.-39553

.91845

.41151

.91140

42

19

.34721

.93779

..36:332

.93159

.37973

.92510

.:39-38i

.918:33

.41178

.91128

41

20

.3474S

.93769

.-36379

.93148

.37999

.92499

.39605

.91822

.41204

.91116

40

21

.34775

.937.59

.:36106

.931:37

.35026

.92455

.39635

.91810

.412:31

.91104

.39

22

.34S03

.93748

.:364 34

.93127

.33053

.92477

.-39661

.91799

,412.57

.91092

38

23

.;MS3)

.9373-^

.:334G1

.93116

.3305<i

.92466

.39688

.91787

.41254

.91080

37

1

21

.:34S37

.93728

.:3645-

.931(6

..38107

.924-35

..39715

.91775

.41310

.9106=

36

23

.34SS4

.93718

.36515

.9.3095

.3-134

.92444

.:39741

.917fr4

.413:37

.910:36

35

26

.34912

.93708

.:365I2

.9:3084

.351Gi

.924:32

.:39768

.91752

.41.363

.91044

:34

27

.3193.^

.93695

.-365^15

.9:3074

.3^188

.92421

.:39795

.91741

.41390

.910.32

.33

2S

.34956

.93658

.36536

.9:3!')63

.:38215

.92410

..39-22

.91729

.41416

.91020

32

29

.34993

.93677

;36'323

.93052

.:33241

.92:399

..39848

.91718

.41443

.91008

31

30

.35021

.93667

.:36650

.9.3042

.:38265

.92358

.:39875

.91706

.41469

.90996

30

31

.3504-

.93657

.36677

.93031

.3^^293

.92.377

.39902

.91694

.41496

.90934

29

'

32

.33075

.93647

.337 '4

.9:3020

.3 -322

.92366

.-3992?

.916=3

.41,-22

.90972

2=

33

.33102

.9:;637

.3573!

.9:3:>:il

.3?:349

.92:355

.:39955

.91671

.41549

.90960

27

34

.:!5I30

.93526

.36758

.92999

.3<3:6

.92:343

.39982

.91660

.41.575

.90948

26

i

33

.331-37

.93616

.337<3

.92955

.3-403

.92:3-32

.40005

.9164-

.41602

.909-36

25

1

3n

.33I>4

.9:3606

.:3681 i

.92978

.384:^0

.92:321

.40035

.916:36

.4162=

.90924

24

37

.33211

.93596

.365:3H

.92967

.:38156

.92310

.40062

.91625

.41655

.9091 1

23

3i

.35230

.9:3535

.:36567

.92956

.3?483

.92299

.40083

.91613

.41651

.90899

22

39

.-35266

.9:3-575

.:36594

.92915

.35510

.92287

.40115

.91601

.41707

.90337

21

40

.35293

.93565

.:36921

.929:J5

.:38537

.92276

.40141

.91-590

.4173-1

.90375

20

41

.35320

.9:3355

.3394N

.92924

.38.564

.92265

.4016=

.91:373

.41760

.90363

19

42

.35:347

.9:3.544

..36975

.9291:^

.35.591

.922.54

.40195

.91566

.41737

.90=51

18

43

.35375

.9.3->34

.37002

.92902

.35617

.92243

.40221

.91:555

.41313

.90839]

17

44

..35402

.93-524

.37029

.92-92

.35644

.92231

.40243

.91.543

.41840

.90826 16

45

.35429

.9:3514

.370.56

.92881

.:35671

.92220

.40275

.91-531

.41866

.908141 15

46

..35456

.93503

.37033

.92-70

.35698

.92209

.40.301

.91519

.41892

.903021

14

47

.3:5454

.93493

.37110

.92559

.38725

.92193

.40:325

.91:31)8

.41919

.90790!

13

4S

..35511

.93453

.:371.37

.92849

.337.52

.92186

.40:3.55

.91496

.41945

.90773!

12

49

.3553S

.93472

.37164

.92-38

.38778

.92175

4J:381

.914=4

.41972

.907661

11

50

.33565

.93462

.-37191

.92-27

.:38805

.92164

.40408

.91472

.41998

.907.53

10

51

.33592

.93452

.37215

.92.316

-388-32

.92152

.4114.34

.91461

.42024

.90741

9

52

.35619

.9:3411

.37245

.92805

-335.59

.92141

.40461

.91449

.42051

.90729

8

53

.33647

.93431

.37272

.92794

.38886

.92130

.40488

.914:37

.42077

.9(J717

7

54

.-35674

.93420

.37299

.92754

.33912

.92119

.40514

.91425

.42104

.90704

6

55

.35701

.93410

.37.326

.92773

.33939

.92107

.40541

.91414

.421.30

.90692

5

56

.3572S

.93400

.37353

.92762

.33966

.92096

.40567

.91402

.421:56

.90680

4

57

.■ir>/00

.a3389

.37:380

.92751

.-38993

.92055

.40594

.91390

.42133

.90663

3

53 1

.35782

.93379

.37407

.92740

.39020

.92073

.4)621

.91378

.42209

.9CK555

2

59

.35810

.9-3-363

..374.34

.92729

.39046

.92062

.40647

.91.366

.422:35

.£0643

I

60 ;

M. j

1

.35837

.933-58 Sine.

.:37461 Cosin.

.9271- Sine.

.3£073 Cosin.

.920-50

.40674

.9ia35 Sine.

.42262 Cosin.

.90631 Sine.

0 M.

Cosin.

Sine.

Cosin.

693 1

683 1

673 1

663 1

653

TABLE

XIV.

NATURAI

. SINES AND COSINES

>.

n

M.

0

35^

3G3

27-

38-^

39^

M.

60

Sine. .42262

Oosia.

Sine.

.43337

Ccsin.

■89379

Sine.

Gosin.

Sine.

Cosin.

.88295

Sine. .48481

Cosin.

.90631

.43399

.89101

.46947

.87462

I

A22^S

.90618

.43363

.39S67

.4.5425

' .89087

.46973

.88281

.43506

.87443

59

2

.42315

.90306

.43389

.39354

.45451

.89074

.46999

.88267

.48532

.87434

53

3

.42311

.90594

.43916

.S9S41

.45477

.89061

.47024

.83254

.48557

.87420

57

4

.42367

.905S2

.43942

.89S23

.45503

.89048

.47050

.8321(1

.48583

.87406

56

5

.42394

.90569

.43963

.89316

.45529

.890.35

.47076

.88226

.43608

.87.391

55

6

.42120

.90557

.43991

.89803

.45.554

.89021

.47101

.83213

.43634

.87377

54

7

42446

.90545

.44020

.89790

.45530

.89003

.47127

.88199

.48659

.87363

53

8

.42173

.90532

.44046

.89777

.45606

.83995

.47153

.88185

.48634

.87349

52

9

.42199

.90520

.44072

.89764

.45632

.88981

.47178

.88172

.48710

.87335

51

10

.42525

.90507

.44093

.89752

.45658

.83968

.47204

.83158

.48735

.87321

50

11

.42.552

.90495

.44124

.89739

.45634

.88955

.47229

.88144

.48761

.87306

49

12

.42573

.90433

.14151

.89726

.45710

.88942

.47255

.88130

.48786

.87292

48

13

.42604

.90470

.44177

.89713

.45736

.88923

.47231

.88117

.4881 1

.87278

47

14

.42631

.90453

.44203

.89700

.45762

.88915

.47306

.83103

.43837

.87264

46

15

.42657

.90146

.44229

.89687

.45787

.88902

.47332

.88089

.48862

.87250

45

16

.42633

.904.33

.412.55

.89674

.45313

.88883

.47358

.88075

.48868

.87235

44

17

.42709

.90421

.44281

.89662

.45339

.88375

.47333

.88(162

.48913

.87221

43

IS

.4273'';

.90403

.44307

.89619

.45865

.88862

.47409

.88043

.43938

.87207

42

19

.42762

.9:)396

.44.333

.89636

.45891

.83848

.47431

.830.34

.43964

.87193

41

20

.427-:;S

.90333

.44359

.89623

.45917

.88835

.47460

.88020

.48989

.87178

40

21

.42?15

.90371

.44335

89610

.45942

.88822

.47486

.83006

.49014

.87161

39

22

.42341

.90358

.44411

.89.597

.45963

.83308

.4751 1

.87993

.49040

.87150

33

23

.42S67

90.346

.44437

.89584

.45994

.83795

.47.537

.87979

.49065

.87136

37

24

.42894

.90334

.44464

.89571

.46020

.88782

.47562

.87965

.49090

.87121

36

2.3

.42920

.90.321

.44490

.895.33

.46046

.83768

.47588

.87951

.49116

.87107

35

26

.42946

.90309

.44516

.89545

.46072

.88755

.47614

.87937

.49141

.87093

34

27

.42972

.90296

.44542

.89532

.46097

.88741

.47639

.87923

.49166

.87079

33

23

.42999

.90234

.44.368

.89519

.46123

.88728

.47665

.87909

.49192

.87064

32

29

.43025

.90271

.44594

.89506

.46149

.88715

.47690

.87896

.49217

.87050

31

30

.43051

.902.59

.44620

.89493

.46175

.88701

.47716

.87882

.49242

.87036

30

31

.4.3077

.90246

.44646

.89480

.46201

.88688

.47741

.87868

.49263

.87021

29

32

.43104

.90233

.44672

.89467

.46226

.83674

.47767

.878.54

.49293

.87007

28

33

.431.30

.90221

.44693

89454

.46252

.88661

.47793

.87840

.49318

.86993

27

34

43156

.90208

.44724

.89441

.46278

.88647

.47818

.87826

.49.344

.86978

26

35

.43182

.90196

.44750

.89423

.46301

.88634

.47844

.87812

.49.369

.86964

25

36

.4.3209

.90183

.44776

.89415

.46330

.88620

.47869

.87798

.49394

.86949

24

37

.43235

.90171

.44802

.89402

.46355

.88607

.47395

.87784

.49419

.86935

23

3S

.43261

.90153

.44323

.89339

.46381

.83593

.47920

.87770

.49445

.86921

22

39

.43237

.90146

.44354

.89376

.46407

.83580

.47946

.87756

.49470

.86906

21

40

.43313

.90133

.44380

.89363

.46433

.88566

.47971

.87743

49495

.86392

20

41

.43340

.90120

.44906

.89350

.46453

.88553

.47997

.87729

.49521

.86878

19

42

.43366

.90103

.44932

.89337

.46484

.88.539

.43022

.87715

.49.546

.86863

18

43

.43392

.90095

.44958

.89321

.46510

.83526

.43043

.87701

.49571

.86349

17

44

.43413

.90082

.44934

.89311

.465.36

.83512

.48073

.87687

.49596

.86834

16

45

.43145

.90070

.45010

.89293

.46561

.88499

.43099

.87673

.49622

.86320

15

46

.43471

.90057

.45036

.89235

.46587

.83435

.48124

.87659

.49647

.86305

14

47

.43197

.90045

.45052

.89272

.46613

.83472

.481.50

.87645

.49672

.86791

13

4S

.43523

.90032

.4:5038

.89259

.46639

.88453

.48175

.87631

.49697

.86777

12

49

.43549

.90019

.45114

.89245

.46664

.88445

.48201

.87617

.49723

.86762

11

50

.43575

.90007

.45140

.89232

.46690

.83431

43226

.87603

.49743

.86743

10

51

.4.3602

.89994

.45166

.89219

.46716

.88417

.48252

.87589

.49773

.86733

9

52

.43623

.89931

.45192

.89206

.46742

.88404

.48277

.87575

.49793

.86719

8

53

.436.54

.89963

.45218

.89193

.46767

.83390

.48303

.87.561

.49824

.86704

7

54

.4.3630

.89956

.45243

.89180

.46793

.88377

.48328

.87546

,49349

.86690

6

55

.43706

.89943

.4.5269

.89167

.46319

.83363

.483.54

.87532

.49374

.86675

5

56

.43733

.89930

.45295

.89153

.46844

.88349

.43379

.87518

.49899

.86661

4

57

.43759

.89918

.45321

.89140

.46870

.88336

.48405

.87504

.49924

.86646

3

63

.43785

.899*5

.4.5.347

.89127

.46896

.83322

.48430

.87490

.49950

.86632

2

59

.43311

.89392

.45373

.89114

.46921

.88308

.48456

.87476

.49975

.86617

1

60

.43337

.89379 SineJ

.45399

.89101

.46947

.88295 Sine.

.48481

.87462 Sine.

.50000

.86603

0 M.

Cosln.

Cosln.

Sine.

Cosln.

Cosin.

Cosin.

Sine.

640 1

030 1

eao I

610 1

603 1

11

226

TABLE XIV. NATURAL SINES AND COSINES.

~0

303 1

310 1

333 1

333 1

343

M.

60

Sine. .50000

Cosin.

Si.:e.

Co-iii.

Slue.

Ccsin.

Sine.

Cosin.

Sine.

Cosin.

.86603

51504

.85717

.52992

.84305

.54464

.3:3367

.55919

.>29J4

I

.50J25

.86533

51529

.85702

.53017

.84789

.544-5

,83351

.55943

.82337

59

2

.5 J 150

.86573

51554

.85687

.53041

.84774

.-,4513

.83335

.55963

.82371

58

3

.50076-

.56559

.51579

.85(72

.53066

.^4759

.54537

.33319

.55992

.82355

57

50101

.86544

.51604

.85657

.53091

.34743

.54561

.83304

..56016

.82539

56

.?

.50126

.86530

.51623

.-55642

.53115

.3472>

.."^45-6

.33788

.56040

,82322

55

6

.50151

.86515

.51653

.35627

.53140

.34712

.54610

.33772

.56064

,82306

54

7

..50176

.86501

.51678

.85612

.53h:4

.34fi97

.546:35

.83756

.56033

.82790

53

5

.50201

.86486

.517(3

.35597

.53189

.84631

.54659

.8:3740

.56112

.82773

52

9

.50227

.86471

.51728

.^55>i

5.3214

.54666

,54653

.33724

.56136

.82757

51

10

.50252

.86457

.51753

.'^."i-'ifl,

.53,-38

.34650

..54703

.8370-

.56160

.82741

50

11

50277

.86442

.51778

.85551

.53263

.^4635

.=547.32

.83692

..56134

.82724

49

12

.50302

.86427

.51803

.85536

.53288

.84619

.547.56

.8.3676

..56203

,82708

48

Vo

.50327

.86413

.51323

.85521

.53312

.3 16; 4

.54731

.-366 1

.562.32

.82692

47

14

.50352

.8639S

.513.52

.855 16

.53337

.8153-

.&4S05

.3:3645

.56256

.82675

46

15

.50377

.86334

.51377

.854^;

..53J61

.84573

.54829

.3:3629

.56280

.82659

45

16

.50403

.86.369

.51902

.85476

.53336

.-^15.'>7

.543.54

.s;3613

..56:3)5

.82643

44

17

.5042-

.863.54

.51927

.8.5461

..53411

.34rv42

.54? 78

.83597

.56:329

.82626

43

IS

.50453

.86340

.519.52

.35416

.m435

.34 '.if;

.54902

.S3531

.56353

.82610

42

19

.5047S

.86325

.51977

.3)4:1

.53460

.84511

.54927

.83565

.56377

.82593

41

20

.50503

.8o310

.52002

.85!: 6

.5.34>l

.84495

.54951

'.3:3.549

..56401

.82577

40

21

.5052S

.8rt-2:'5

.52026

.3.5401

.53509

.814-0

..54975

.8:3533

..56425

.82561

39

22

..50.5.53

.86231

..52)51

.35335

.53531

.34l6i

.54999

.83517

.56449

.82544

33

23

.50578

.86266

.52076

.85370

.53553

.3411-

.5.5024

.83501

.56473

.82523

37

21

.50603

.862,31

..52101

.85355

.53.533

.34433

.55043

..S34-5

.56497

.82511

36

25

..50623

.86237

.521 6

.8534 .

.53607

.84417

.5.5072

.33469

.56521

.82495

35

26

.506.54

.862i2

.52151

.85325

.53632

.344' 2

.55097

.3-3453

..56545

.82473

.34

27

.50679

.86207

..52175

.85310

..".3656

.-<!!- 6

.55121

.Si43r

.56569

.82462

33

2>

.50701

.86192

..52200

.35294

.53631

.S4370

.55145

.8:3421

.56593

.82446

32

29

.50729

.86178

.52225

.85279

.53705

.84:3.55

.55169

.3:3405

.56617

.82429

31

30

.50754

.86163

.52250

.85264

.53730

.84339

.55194

.83389

.56641

.82413

30

31

.50779

.86143

.52275

.85249

.537.->l

.34.324

.55218

.33373

.56665

.82396

29

32

..50304

.86133

.52299

.3.5231

.53779

.34313

.55242

.83356

.56639

.82330

23

33

.50329

.86119

.52321

.8.5213

.53>04

.84292

.5.5266

.83340

.56713

.82363

27

3;

.503:54

.86101

.5234:^

.85ai3

.5332-

.64277

.5529[

.83:324

.567.36

.82:347

26

35

.50379

.86039

.52374

.35133

.53353

.84261

.55315

.83303

.56760

.82330

25

36

.50904

.86074

.52.399

.s-)l7;i

.53377

.34245

.55:3:39

.83292

.56784

.82314

24

37

..50929

.86059

.52423

.85157

.53902

.^42:30

.55363

.33276

.56303

.82297

23

3>

.50954

.85045

.52443

.85142

.53926

.84214

.55333

.8.3260

.563.32

.82231

22

39

.50979

.85030

.52473

.35127

.53951

.81193

.55412

.3:3244

.56356

.82264

21

40

.51004

.86015

.5243>

.85112

.53975

.34132

.5.5436

.■^3223

.56330

.82243

20

41

.51029

.86000

.52.522

.85096

.54000

.81167

.5.5460

.8.32 U

.56904

.82231

19

42

.51054

.85935

.52547

.85081

.54024

.84151

.55434

:83195

.56923

.32214

18

43

.51079

.8597(1

.52572

.3.5006

.54049

.84135

.5.5509

.83179

.569.52

.8219?

17

44

.51104

.35956

..52597

.850.51

.54073

.84120

.5.55.3.3

.83163

.56976

.82181

16

45

.51129

.8594 1

.52621

.85035

.54097

.84104

.55557

.83147

.57000

.82165

15

46

.511.54

.85926

..52646

.35020

.54122

.84033

..5.5.531

.83131

.57024

.82143

14

47

.51179

.&5911

..52671

.85005

.54146

.84072

..5.5605

.83115

.57047

.82132

13

4S

.51204

.85396

..52696

.84939

.54171

.84057

.556:30

.83098

.57071

.32115

12

49

.51229

.85331

..52720

.34974

.54195

.84041

..55654

.83082

.57095

.82098

11

50

.51254

.35366

.52745

.84959

..54220

.34025

.55678

.3:3066

.57119

.82082

10

51

.51279

.3^5-51

.52770

.34943

..54244

.34009

.55702

.83050

.57143

.82065

9

52

.51304

.85336

.52794

.8492?

.54269

.33994

.55726

.8.30.34

.57167

.82043

8

53

.51329

.85321

..52319

.34913

..54293

.83973

.55750

.83017

.57191

.820.32

7

54

.51.354

.85306

..52344

.■34397

.54317

.83962

. .55775

.8.3001

.57215

.82015

6

55

.51379

.85792

..52369

.84332

.54342

.83946

..55799

.82935

.572.33

.81999

5

56

.51404

.85777

..52393

.84366

.54366

.839.30

.55823

.82969

.57262

.81932

4

57

.51429

.85762

.52918

.84351

.54391

.83915

.5.5347

.82953

.57286

.81965

3

53

.51454

.85747

..52943

.84836

..54415

.83399

.5=5871

.82936

.57310

.81&49

2

59

.51479

.85732

.52967

.84S20

..54440

.83383

.55895

.82920

.57334

.81932

1

60 M.

.51504

.85717 Sine.

.52992 Cosin.

.84805 Sine.

.54464 Coain.

.83367

.55919

.82904

.57353

.81915

0 M.

Cosin.

Sine.

Cosin.

Sine.

Cosin.

Sine.

593 1

5

33 '—^

573 <

563

553

TABLE XIV. NATURAL SINES AND COSINES.

227

M.

C

350

3GO

370 1 383

390

M.

) 60

Sine.

.573.jt:

Cosin

Sine.

Cosin.

.80902

Sine.

Cosin.

.79364

Sine.

Cosin.

.78301

Sine. .62935

Cosin

.777K

.«1915

.5S77<J

.60185

.6156e

1

.57381

.81399

.58302

.80S8.')

.6020-

.79346

.6153£

.78783

.62955

.7769t

) 69

2

.57405

.81382

.5S32G

.80367

.6022.5

.79329

.61615

.78765

.62977

.77676

] 58

3

.57420

.81865

.58349

.80350

.60251

.79311

.61635

.78747

.63000

.7766t

) 57

4

.57453

.81843

.58873

.80333

.60274

.79793 J .61953

.78729

.63022

.77641

56

5

.57477

.81832

.58896

.80816

.60298

.7977G

.61631

.78711

.G3045

.77625

55

G

.57501

.81815

.58920

.80799

.60.321

.79758

.61704

.76694

.630G6

.7760£

54

7

Sural

.81793

.58943

.8078-2

.60344

.79741

.6172G

.78676

.6.3090

.7758C

53

8

.57:-i-

.81782

.58967

.30765

.G0367

.79723

.61749

.78653

.63113

.77563

52

9

.57572

.81765

.58990

.80743

.60390

.79706

.61772

.78640

.63135

.7755C

51

10

."j/o'.iG

.81748

.59014

.80730

.60414

.79638

.61795

.78622

.63158

.77531

50

11

.570 19

.81731

.59037

.80713

.60437

.79671

.61818

.78604

.63180

.77512

49

12

.57613

.81714

.59061

.80696

.60460

.796.53

.61841

.78586

.63203

.77494

48

13

.57667

.81698

.59084

.80679

.60483

.79635

.61864

.78563

.63225

.77476

47

14

.57691

.81631 S.. 59108

.80662

.60506

.79618

.61887

.78550

.63248

.77458

46

15

.57715

.81664

.59131

.80644

.60529

.79600

.62909

.78532

.63271

.77439

45

16

.57733

.81647

.59154

.80627

.60053

.79583

.61932

.78514

.63293

.77421

44

17

.57762

.81631

..59173

.80610

.60576

.79.565

.61955

.78496

.63316

.77402

43

13

.57786

.81614

.59201

.80593

.60599

.79547

.61978

.78478

.63333

.77384

42

19

.57^10

.81597

.59225

.80576

.60622

.79530

.62001

.764G0

.63.361

.77366

41

20

.575.33

.81580

.59248

.80553

.60645

.79512

.62024

.78442

.63333

.77347

40

21

.57857

.ai563

.59272

.80541

.60G63

.79494

.62046

.78424

.63406

.77329

39

22

.57881

.81546

.59295

.80524

.60691

.79477

.62069

.78405

.63423

.77310

38

23

.57904

.81530

.59318

.80507

.60714

.79459

.62092

.78337

.6.3451

.77292

37

24

.57923

.81513

.59312

.80489

.60738

.79441

.62115

.78369

.63473

.77273

36

25

.57952

.81496

.59365

.80472

.60761

.79424

.62138

.78351

.63496

.772-55

35

26

.57976

.81479

.59389

.80455

.60784

.79406

.62160

.78333

.63518

.77236

34

27

.57999

.81462

.59412

.80433

.60807

.79338

.62183

.78315

.63540

.77218

33

23

.58023

.81445

.594.36

.80420

.60830

.79371

.62206

.78297

.63563

.77199

32

29

.53017

.81423

.59459

.80403

.60853

.79353

.62229

.78279

.63535

.77181

31

30

.53070

.81412

.59482

.80336

.60876

.79335

.62251

.78261

.63608

.77162

30

31

.53094

.81395

.59506

.80363

.60899

.79318

.62274

.78243

.6.3630

.77144

29

32

.53118

.81378

.59529

.80351

.60922

.79300

.62297

.76225

.63653

.77125

28

33

.53141

.81361

.59552

.803.34

.60945

.79232

.62320

.78206

.63675

.77107

27

34

.58165

.81344

.59576

.80316

.60963

.79264

.62.342

.78158

.63693

.77088

26

35

.53189

.81327

.59599

.80299

.60991

.79247 .62365

.78170

.63720

.77070

25

36

.53212

.81310

.59622

.80282

.61015

.79229 .62-3881

.78152

.63742

.77051

24

37

.58236

.81293

.59646

.80264

.61033

.79211

.62411

.78134

.63765

.77033

23

33

.58260

.81276

.59669

.80247

.61061

.79193

.62433

.78116

.63787

.77014

22

39

.58283

.81259

.59693

.80230

.61084

.79176

.62456

.73093

.63310

.76996

2!

40

.53307

.81242

.59716

.80212

.61107

.79158

.62479

.78079

.G3S32

.76977,

20

41

.533.30

.81225

.59739

.80195

.61130

.79140

.62502

.78061

.63354

.76959

19

42

.58354

.81208

.59763

.80178

.61153

.79122

.62524

.78043

.63377

.76940

18

43

.58378

.81191

.59786

.80160

.61176

.79105

.62547

.78025

.6.3399

.76921

17

44

.53401

.81174

.59809

.80143

.61199

.79087

.62570

.73007

.63922

.76903

16

45

.58425

.81157

.59332

.80125

.61222

.79069

.62.592

.77983

.6.3944

.76884

15

46

.53449

.81140

.59856

.80108

.61245

.79051

.62615

.77970

.63966

.76366

14

47

.53472

.81123

.59879

.80091

.61263

.79033

.62633

.77952

.639>9

.76347

13

48

.53496

.81106

.59902

.80073

.61291

.79016

.62660

.77931

.64011

.7GS2S

12

49

.53519

.81089

.59926

.80056

.61314

.78998

62633

.77916

.64033

.76810

11

50

..58543

.81072

.59949

.80038

.61337

.78^30

.62706

.77897

.64056

76791

10

51

.53567

.81055

.59972

.80021

.61360

.78962

.62728

.77879

.64078

76772

9

52

.58590

.81038

.59995

.60003

.61333

.78944

.62751

.77661

.64100

76754

8

53

.58614

.81021

.60019

.79986

.61406

.78926

.62774

.77843

.64123

76735

7

54

.586.37

.81004

.60042

.79963

.61429

.78908

.62796

77824

.64145

76717

6

55

.58661

.80987

.60065

.79951

.61451

.78891

.62319

77806

.64167

76698

5

56

.58634

.80970

.60089

.79934

.61474

.78873

.62842

77788

.64190

76679

4

57

.58708

.80953

.60112

.79916

.61497

78855

.62864

77769

.64212

76661

3

58

.58731

.80936

.60135

.79399

.61.520

78837

.62887

77751

.64234

76642

2

59

58755

.80919

.60158

.79381

.61543

78819

.62909

77733

.64256 .

76623

1

60 M.

58779 CJosin.

80902

.60182

79864

.61566

78801

.62932 Cosin.

77715

.64279 . Cosin.

76604

0

Sine. Cosin. 1

Sine.

Cosin.

Sine.

Sire.

Sine. I

540 1 530 1

sao r

510 1

500 1

228

TAB].E XIV. NATURAL SINES AND COSINES.

M.

0

4:03

4:10

4:30

4:33

4:40

M.

60

Sine.

.64279

Cosin.

Sine.

Cosin.

Sine.

Cosin.

Sine.

Cosin.

Sine.

Cosin.

.76604

.65606

.75471

.66913

.74314

.68200

.73135

.69466

.719.S4

1

.64301

.76586

.65623

.75452

.66935

.74295

.68221

.73116

.69437

.71914

59

2

.64323

.76567

.65650

.75433

.66956

.74276

.68242

.73096

.69503

.71894

53

3

.64346

.76543

.65672

.7.5414

.66978

.74256

.68264

.73076

.69.529

.71873

57

4

64363

.76.530

.65694

.75395

.66999

.74237

.63235

.73356

.69549

.71853

56

5

.64390

.76511

.65716

.75375

.67021

.74217

.68.306

.73036

.69570

.71833

55

6

.64412

.76492

.65733

.75.356

.67043

.74193

.68327

.73016

.69591

.71813

54

7

.64435

.76473

.65759

.75337

.67064

.74173

.68349

.72996

.69612

.71792

53

8

.64457

.76455

.65731

.75313

.67086

.74159

.68.370

.72976

.69633

.7F72

52

9

.64479

.76436

.65303

.75299

.67107

.74139

.68391

.72957

.69654

.71752

51

10

.64501

.76417

.6582.5

.75280

.67129

.7412)

.63412

.72937

.69675

.71732

50

11

.64524

.76393

.6.5347

.75261

.67151

.74100

.63434

.72917

.69696

.71711

49

12

.64546

.76330

.65369

.75241

.67172

.74080

.63455

.72897

.69717

.71691

43

13

.64568

.76361

.65391

.75222

.67194

.74061

.63476

.72377

.69737

.71671

47

14

.64590

.76342

.65913

.75203

.67215

.74041

.68497

.72857

.69753

.71650

46

15

.64612

.76323

.65935

.75134

.67237

.74022

.63513

.72837

.69779

.71630

45

16

.646.35

.76304

.65956

.75165

.67258

.74002

.685.39

.72317

.69300

.71610

44'

17

.64657

.76286

.65973

.75146

.67230

.73933

.68561

.72797

.69321

.71590

43

13

.64679

.76267

.66000

.75126

.67301

.73963

.68532

.72777

.69342

.71569

42

19

.64701

.76248

.66022

.75107

.67323

.73944

.68603

.72757

.69862

.71549

41

20

.64723

.76229

.66044

.75083

.67344

.73924

.68624

.72737

.69883

.71.529

40

21

.64746

.76210

.66066

.75069

.67366

.73904

.68645

.72717

.69904

.71503

39

22

.64763

.76192

.66088

.75050

.67387

.73835

.68666

.72697

.69925

.71483

38

23

.64790

.76173

.66109

.75030

.67409

.73865

.68683

.72677

.69946

.71463

37

24

.64812

.76154

.66131

.75011

.67430

.73346

.68709

.72657

.69966

.71447

36

25

.64834

.76135

.66153

.74992

.67452

.73826

.68730

.72637

.69937

.71427

35

26

.643.56

.76116

.66175

.74973

.67473

.73806

.68751

.72617

.70003

.71407

34

27

.64873

.76097

.66197

.74953

.67495

.73787

.68772

.72597

.70029

.71386

33

23

.64901

.76073

.66213

.74934

.67516

•73767

.68793

.72577

.70049

.71366

32

29

.64923

.76059

.66240

.74915

.675.33

.73747

.63814

.72557

.70070

.71345

31

30

.64945

.76041

.66262

.74896

.67559

.73723

.63835

.72537

.70091

.71325

30

31

.64967

.76022

.66234

.74876

.67530

.73703

.63357

.72517

.70112

.71305

29

32

.64939

.76003

.66306

.74857

.67602

.73683

.63373

.72497

.70132

.71234

23

33

.6.5011

.75984

.66-327

.74838

.67623

.7.3669

.63399

.72477

.70153

.71264

27

34

.6.5033

.75965

.66349

.74818

.67645

.73649

.68920

.72457

.70174

.71243

26

35

.65055

.75946

.66371

.74799

.67666

.7.3629

.68941

.72437

.70195

.71223

25

36

.6.5077

.75927

.66393

.74730

.67633

.73610

.63962

.72417

.70215

.71203

24

37

.65100

.75908

.66414

.74760

.67709

.7.3.590

.63933

.72397

.702.36

.71182

23

33

.65122

.75389

.66436

.74741

.67730

.73570

.69004

.72377

.70257

.71162

22

39

.65144

.75370

.66458

.74722

.67752

.73551

.69025

.72357

.70277

.71141

21

40

.65166

.75851

.66480

.74703

.67773

.73531

.69046

.723.37

.70293

.71121

20

41

.65133

.75832

.66501

.74683

.67795

.73511

.69067

.72317

.70319

.71100

19

42

.65210

.75813

.66523

.74664

.67316

.73491

.69033

.72297

.703.39

.71030

18

43

.65232

.75794

.66545

.74644

.67337

.73472

.69109

.72277

.70360

.71059

17

44

.652.54

.75775

.66566

.74625

.67359

.73452

.69130

.72257

.70381

.71039

16

45

.65276

.75756

.66533

.74606

.67330

.73432

.69151

.72236

.70401

.71019

15

46

.65298

.75733

.66610

.74536

.67901

.73413

.69172

.72216

.70422

.70993

14

47

.65320

.75719

.66632

.74567

.67923

.73393

.69193

.72196

.70443

.70978

13

48

.65.342

.75700

.66653

.74.543

.67944

.73373

.69214

.72176

.70463

.70957

12

49

.65364

.75680

.66675

.74523

.67965

.73353

.69235

.72156

.70434

.70937

11

50

.6.5336

.7.5661

.66697

.74509

.67987

.73333

.69256

.72136

.70505

.70916

10

51

.65403

.75642

.66718

.74439

.68008

.73314

.69277

.72116

.70525

.70396

9

52

.65430

.75623

.66740

.74470

.63029

.73294

.69293

.72095

.70546

.70875

8

53

.6.5452

.7.5604

.66762

.74451

.68051

.73274

.69319

.72075

.70567

.70355

7

54

.65474

.75535

.66733

.74431

.68072

.73254

.69340

.72055

.70537

.703.34

6

55

.65496

.75566

.66805

.74412

.68093

.73234

.69361

.72035

.70603

.70313

5

56

.65518

.75547

.66327

.74392

.63115

.73215

.69382

.72015

.70623

.70793

4

57

.65540

.75528

.66343

.74373

.63136

.73195

.69403

.71995

.70649

.70772

3

58

.65562

.75509

.66370

.74353

.68157

.73175

.69424

.71974

.70670

.70752

2

59

.65534

.75490

.66891

.74334

.63179

.73155

.69445

.71954

.70690

.70731

1

60 M.

.65606

.75471

.66913

.74314

.68200

.73135

.69466

.719^4

.70711

.70711

0

Cosin.

Sine.

Cosin. Sine.

Cosin. 1

Sine. Cosin. 1

Sine.

Cosin.

Sine.

493 1

4:83 473 1 4:63 |

4:53 1

Tvnr^^

TABLE XV.

NATURAL TANGENTS AND COTANGENTS

230 TABLE XV. NATURAL TANGENTS AMU COTANGENTS.

M.

0

03 1

1

.0

ao 1

30

M.

60

Tang.

Cotang.

Tang.

Cotang.

Tang.

Cotang. 23.6363

Tang.

Cotang.

.00000

Infinite.

.01746

57.2900

.03492

.0.5241

19.0811

1

.00029

3437.75

.01775 1

56.3506

.03521

23.3994

.05270

18.9755

59

2

.00053

1713.57

.01304 i

5.5.4415

.03550

28.1664

.'05299

18.8711

58

3

.00087

1145.92

.01333

54.. 56 13

.03579

27.9372

.05328

18.7678

57

4

.00116

859.436

.01362

53.7036

.03609

27.7117

.05357

18.66.56

56

5

.00145

637.549

.01391

52.8321

.03633

27.4899

05387

18.5645

55

6

.00175

572.957

.01920

52.0307

.03667

27.2715

/J5il6

.•e.4645

54

7

.00204

491.106

.01949 i

51.3032

.03696

27.0566

.05445

18.3655

53

8

.00233

429.713

.01978

50.5485

.03725

26.5450

.05474

18.2677

52

9

.00262

33L971

.02007

49.3157

.03754

26.6367

.05503

18.1708

51

10

.00291

343.774

.02036

49.1039

.03783

26.4316

.05533

13.0750

50

11

.00320

312.521

.(12066

43.4121

.03312

26.2296

.05562

17.9502

49

12

.00349

2-;6.473

.02095

47.7395

.0.3342

26.0.307

0.5591

17.5563

48

13

.00373

264.441

.02124

47.0353

.03371

25.3348

.05620

17.7934

47

14

.00407

245.552

.02L53

46.4439

.03900

25.6413

.05649

17.7015

46

15

.00436

229.132

.02132

45.3294

.03929

2.5.4517

.05678

17.6106

45

16

.00465

214.858

.O23I0

45.2261

.03958

25.2644

.05708

17.5205

44

17

.00495

202.219

44.6336

.03937

25.0798

.05737

17.4314

43

13

.00524

190.934

.02269

44.0661

.04016

24.8973

.05766

17.3432

42

19

.00553

130.932

.02298

43.5031

.04046

24.7135

.05795

17.2553

41

20

.00532

171. 3S5

.02323

42.9641

.04075

24.5413

.05824

17.1693

40

21

.00611

163.700

.02357

42.4335

.04104

24.3675

.0.5354

17.0537

39

22

.00640

] 56.259

02336

41.9153

.04133

24.1957

.05833

16.9990

38

23

.00669

149.465

.02415

43.4106

.01162

24.0263

.0.5912

16.9150

37

24

.00693

143.23?

.f'2444

40.9174

.04191

23.8593

.05941

16.8319

36

25

.00727

1^7.507 152.219

.02473

40.4358

.04220

23.6945

.05970

16.7496

35

26

.00756

.02502

39.9655

.042.50

2.3.5.321

.05999

16.6631

34

27

.00735

127. .321

.02531

39.5059

.04279

23.3718

.06029

16.5374

33

23

.00315

122.774

.02560

39.0563

.04.303

2.3.2137

.06053

16.5075

32

29

.00344

118.510

.02589

33.6177

.043.37

23.0577

.06037

16.4233

31

30

.00S73

114.5S9

.02619

38.1885

.04366

22.90.33

.06116

I6..3499

30

31

.00902

110392

.02643

37.7636

.04395

22.7519

.06145

16.2722

2J

32

.00931

107.426

.02677

37.3579

.04424

22.6920

.06175

16.19.52

28

33

.00960

104.171

.02706

36.9560

.04454

22.4541

.06204

16.1190

27

34

.00939

101.107

.02735

36.5627

.04483

22.3031

.06233

16.04-35

26

35

.01013

93.2179

.02764

36.1776

.04512

■22.1fr40

.06262

15.9637

25

36

.01047

95.4395

.02793

35.3006

.04541

22.0217

.06291

15.3945

24

37

.01076

92.90S5

.02322

35.4313

.04570

21.3813

.06321

15.5211

23

33

.01 lOo

90.4633

.02351

35.0695

.04599

21.7426

.06350

15.7433

22

39

.01135

83.14.36

.02881

^4.7151

.04623

21.6056

.06379

15.6762

21

40

.01164

35.9393

.02910

34.3678

.04658

21.4704

.06408

15.6043

20

41

.01193

83.3435

.02939

^4.0273

.04637

21.3369

.06437

15.5-340

19

42

.01222

31.3470

.02963

33.6935

.04716

21.2049

.06467

15.46.33

18

43

.01251

79.94:34

.02997

33.3662

.04745

21.0747

.06496

15.3943

17

44

.01230

73.1263

.03026

33.0452

04774

20.9460

.06.525

15.3254

16

45

.01309

76.3900

.03055

32.7303

.04303

2^3183

.06554

15 2571

15

46

.01333

74.7292

.03034

32.4213

.04333

20.6932

.06.584

1-5.1593

14

47

.01367

73.1390

.03114

32.1181

.04862

205691

.06613

15.1222

13

48

01396

71.6151

.03143

31.8205

.04891

20.4465

.06642

15.0557

12

49

.01425

70.1533

.03172

31.5234

.04920

20..3253

.06671

14.9398

11

50

.01455

63.7501

.03201

31.2416

.04949

20.2056

.06700

14.9244

10

51

.01434

67.4019

.0.32.30

309599

.04978

20.0872

.06730

14.8596

9

52

.01513

66.1055

.032.59

30.6333

.05007

19.9702

.06759

14.7954

8

53

.01542

64.3.530

.03233

30.4116

.05037

19.3546

.06788

14.7317

7

54

.01571

63.6567

.0-3317

30.1446

.05066

19.7403

.06317

14.6655

6

55

.01600

62.4992

.03346

29.3323

.05095

19.6273

.06847

14.6059

5

56

.01629

61.3329

.0.3376

29.6245

.O0I24

! 19.5156

.06376

14.54-33

4

57

.016.58

60.3053

.03405

29.3711

.05153

19.4051

.06905

14.4523

3

53

.01637

59.2659

.03434

29.1220

.05182

19.29.59

.06934

14.4212

2

59

.01716

58.2612

.0.3463

23.3771

.05212

19.1579

.06963

14.3607

1

60

m:

.01746 Co tang.

57.29flCi

.03492

23.6363 Tang.

.05241

19.0311

.06993

14.. 3007

0 M.

Tang.

Cotang.

Cotang.

Tang.

Cotang.

Tang.

i

93

8

§3

g

yo

g

60

TABLt

, XV.

NATURAL TANGENTS

AND COTANGENTS.

231

M

0

4rO

50

60

70

M.

60

. TaDg

.06993

1 Cotang 14.3au7

Tang.

Cotang.

Taug.

Cotang. 9.51436

Tang. .12273

Cotang. 8.14435

.03749

11.4301

.10510

1

.07022

14.2411

.08778

11.3919

.10540

9.4^731

. 1 2.303

8.12431

59

2

.07051

14.1821

.08807

11.3540

.10569

9.46141

.12333

8.10536

58

3

.07080

14.1235

.08837

11.3163

.10599

9.43515

.12367

8.08600

57

4

.07110

14.0655

.08366

11.27.39

.10623

9.40904

.12397

8.06674

56

5

, .07139

14.0079

.03895

11.2417

.10657

9.3^307

.12426

8.04756

55

6

J .07168

13.9.507

.03925

11.2 t4>

.10637

9.35724

.12456

8.02,348

54

7

.07197

13.8940

.0j954

11.1631

.10716

9.33155

.12435

8.00948

" ^ 1

53

8

.07227

13.8378

.03933

11.1316

.10746

9.30599

.12515

7.99058

52

S

.072.56

1.3.7821

.09013

11.09.54

.10775

9.28058

.12544

7.97176

51

10

.072S5

13.7267

.09042

! 1.0594

.10305

9.25530

.12574

7.95302

60

11

.07314

13.6719

.09071

11.02.37

.10:^34

9.23016

.12603

7.93433

49

12

i .07314

13.6174

.09101

10.93^2

.10j63

9.20516

.12633

7.91582

48

13

1 .07373

13.5634

.091.30

10.9529

.10>93

9.13028

.12662

7.89734

47

14

i .07402

13.5093

.091.59

10.9178

.10922

9.15554

.12692

7.37895

46

15

1 .07431

13.4566

.09189

10.8329

10952

9.13093

.12722

7.S6C64

45

16

.07461

13.4039

.09218

10.8483

.10981

9.10616

.12751

7.84242

44

17

.07490

1.3.. 351 5

.09247

10.8139

.11011

9.03211

.12781

7.82428

43

18

.07519

13.2996

.09277

10.7797

.11040

9.05789

.12810

7.80622

42

19

.07548

13.2480

.09306

10.74.57

.11070

9.03379

.12840

7.78325

41

20

.07578

13.1969

.09335

10.7119

.11099

9.00953

.12369

7.770.35

40

21

.07607

13.1461

.09365

10.6783

.11128

8.93598

.12-99

7.75254

39

22

.076:^6

13.0953

.09394

10.64.50

.11158

8.S6227

.12929

7.73480

38

23

.07665

13.0458

.09423

10.6118

.11187

8.9.3367

.129.58

7.71715

37

24

.07695

12.9962

.09453

10.57^9

.11217

8.91520

.12938

7.69957

36

25

.07724

12.9469

.09432

10.. 5462

.11246

•8.39135

.13017

7.63208

35

26

.07753

12.8981

.09511

10.5136

.11276

8.36362

.13047

7.66466

1

34

27

.07782

12.3496

.09541

10.4313

.11305

8.34551

.13076

7.647.32

33

23

.07812

12.8014

•09570

10.4491

.11335

8.82252

.13106

7.6.3005

32

29

.07841

12.7536

.09600

10.4172

.11364

8.79964

.131.36

7.61287

31

30

.07870

12.7062

.09629

10.3354

.11394

8.77689

.13165

7.59575

30

31

.07^99

12.6.591

.09658

10. .3533

11423

3.7.5425

.13195

7.57372

29

32

.07929

12.6124

.09688

10.3224

.11452

8.73172

.13224

7.. 56 J 76

28

33

.07958

12.5660

.09717

10.2913

.11482

8.70931

.13254

7.54487

27

34

.07987

12.5199

.09746

10.2602

.11511

8.63701

.1.3234

7.52806

26

35

.08017

12.4742

.09776

. 10.2294

.11.541

8.66432

.1.3313

7.51132

25

36

.08046

12.4233

.09305

10.1938

.11570

8.64275

.13343

7.49465

24

37

.03075

12.3333

.09334

10.1683

.11600

8.62078

.1.3372

7.47306

23

33

.03104

12.. 3.390

.09364

10.1381

.11629

8.. 59893

.13402

7.46154

22

39

.081.34

12.2946

.09893

10.1080

.116.59

8.57718

.134.32

7.44509

21

40

.03163

12.2505

.09923

10.0780

.11633

8.55555

.1.3461

7.42871

20

41

.08192

12.2067

.09952

10.0433

.11718

8.53402

.13491

7.41240

19

42

.08221

12.1632

.09931

10.0137

.11747

8.512.59

.13521

7.39616

18

f.

.0823 I

12.1201

.10011

9.93931

.11777

8.49128

.13550

7.37999

17

44 1

.08230

12.0772

.10040

9.96G07

11806

8.47007

.13.580

7.36389

16

45

.08309

12.0346

.10069

9.93101

.11836

8.44396

.13609

7.34786

15

46

.08339

11.9923

.10099

9.90211

.11365

8.42795

.13639

7.33190

14

47

.08368

11.9504

.10123

9.87333

.11395

8.40705

.13669

7.31600

13

48

.03397

11.9037

.10153

9.S44S2

.11924

S..3362.5

.13693

7.30013

12

49

.08427

11.8673

.10187

9.81641

.11954

8.36555

.13728

7.23442

11

50

.03456

11.8262

.10216

9.78817

.11933

8.34496

.13758

7.26873

10

51

.08485

11.7353

.10246

9.76009

.12013

8.32446

.13787

7.25310

9

52

.08514

11.7448

.10275

9.73217

.12012

8.30406

.13817

7.23754

8

53

.08544

11.7045

.10305

9,70441

.12072

8.2-3376

.13346

7.22204

7

54

.03573

11.6645

.10.334

9.67680

.12101

8.26355

.13376

7.20661

6

55

.08602

11.6243

.10363

9.64935

.12131

8.24345

.13906

7.19125

5

56

.08632

11.5353

.10393

9.62205

.12160

3.22.344

.139,35

7.17594

4

57

.08661

11.5461

.10422

9.59490

.12190

8.20.352

.1.3965

7.18071

3

58

.08690

11.5072

.10452

9.56791

.12219

8.18370

13995

7.14553

2

59

.03720

11.4635

.10481

9.54106

.12249

8.16393

. 14024

7.13042

1

6ii .(Lsz-jy

11 4301

.10510 9.51436

.12278

8.144.35 Tang. (

.14054

7.11.537

0

1 i

M. Cotang.

Tang. (

Jotang. 1 Tang. (

[Jotang. J

Cotang.

Tang. 1

^_-.

w.:

i^

840

833 1 8JJ0

'46:<

; TAP

!LE XV.

I^JATURAL TANGENTS AND COTANGENTS

).

M

0

80

9^

lOO

110

1 M.

60

Tang. .14054

CotaDg. 7.11537

Tang.

Cotang.

Tang.

Cotang.

5.67128

Tang.

Cotang. 5.144.55

.15333

6.31375

.176.33

.19438

1

.14084

7.10038

15868

6.30189

.17663

5.66165

.19468

5.13658

59

2

.14113

7.03546

.15398

6.29007

.17693

5.65205

.19498

5.12862

58

3

.14143

7.07059

.15928

6.27829

.17723

6.64248

.19529

5.12069

57

4

.14173

7.05579

.15958

6.26655

.17753

5.63295

.19559

5,11279

56

5

.14202

7.04105

.15988

6.25436

.17783

5.62344

.19539

5.10490

55

6

.14232

7.02637

.16017

6.24321

.17813

5.61397

.19619

5.09704

54

7

.14262

6.91174

.16047

6.23160

.17343

5.60452

.19649

5.03921

63

8

.14291

6.99713

.16077

6.22003

.17373

5.59511

.1L630

5.031.39

52

9

.14321

6.9326S

.16107

6.20351

.17903

5.58573

.19710

5.07360

51

10

.14351

6.96323

.16137

6.19703

.17933

5.57638

.19740

5.06584

50

11

.143S1

6.95335

.16167

6.18559

.17963

5.56706

.19770

5.0.5809

49

12

.14410

6.9.3952

.16196

6.17419

.17993

5.55777

.19801

5.05037

48

13

.14440

6.92525

.16226

6.16233

.13023

5.54851

.19831

5.04267

47

14

.14470

6.91104

.16256

6.15151

.18053

5.53927

.19861

5.03499

46

15

.14499

6.39683

.16236

6.14023

.18083

5.53007

.19391

5.02734

46

16

.14529

6.88278

.16316

6.12399

.18113

5.52090

.19921

5.01971

44

17

.14559

6.86374

.16346

6.11779

.18143

5.51176

.19952

5.01210

43

18

.14588

6.85475

.16376

6.10664

.13173

5.50264

.19952

5.00451

42

19

.14618

6.84032

.16405

6.09.552

.13203

5.49356

.20012

4.99695

41

20

.14643

6.82694

.16435

6.03444

.13233

5.48451

.20042

4.98940

40

21

.14678

6.SI3I2

.16465

6.07340

.13263

5.47548

.20073

4.98188

39

22

.14707

6.79936

.16495

6.06240

.18293

5.46643

.20103

4.97433

38

23

.14737

6.73564

.16525

6.05143

.13323

5.45751

.20133

4.96690

37

24

.14767

6.77199

.16555

6.04J51

.13353

5.44357

.20164

4.95945

36

25

.14796

6.75S33

.16535

6.02962

.18334

5.43966

.20194

4.9.5201

35

26

.14326

6.74433

.16615

6.01 37S

.18414

5.43077

.20224

4.94460

34

27

.14S56

6.73133

.16645

6.00797

.18444

5.42192

.20254

4.93721

33

23

.14336

6.71789

.16674

5.99720

.18474

5.41309

.20285

4.92934

32

29

.14915

6.70450

.16704

5.93646

.18504

5.40429

.20315

4.92249

31

30

.14945

6.69116

.16734

5.97576

.18534

5.39552

.20345

4.91516

30

31

.14975

6.67737

.16764

5.96510

.18564

5.33677

.20376

4.90785

29

32

.15005

6.66463

.16794

5.9.S448

.18594

5.37805

.20406

4.90056

28

33

.15034

6.65144

.16324

5.94390

.18624

5.36936

.20436

4.89330

27

34

.1.5064

6.6.3331

.16354

5.9a335

.18654

5.36070

.20466

4.SS605

26

35

. 1 5094

6.62523

.16381

5.92283

.18634

5.35206

.20497

4.87882

26

36

.15124

6.61219

16914

5.91236

.18714

5.»4345

.20527

4.87162

24

37

.15153

6.59921

.16944

5.90191

.18745

5.33437

.20557

4.86444

23

33

.15183

6.53627

.16974

5.89151

.18775

5.32631

.20588

4.85727

22

39

.15213

6.57339

.17004

5.88114

.18805

5.31778

.20618

4.85013

21

40

.15243

6.56055

.17033

5.87030

.18835

5.30928

.20648

4.84300

20

41

.15272

6.54777

.17063

5. 8605 1

.18865

5.30030

.20679

4.83590

19

42

.15302

6.53503

.17093

5.85024

.18895

5.29235

.20709

4.82382

18

43

.15332

6.52234

.17123

5.84001

.18925

5.23393

.20739

4.82175

17

44

.15362

6.. 50970

.17153

5.82982

.18955

5.27553

.20770

4.81471

16

45

.15391

6.49710

.17183

5.81966

.18936

5.26715

.20300

4.80769

15

46

.15421

6.48456

.17213

5.80953

.19016

5.25880

.20830

4.80063

14

47

.15451

6.47206

.17243

5.79944

.19046

5.25048

.20861

4.79370

13

48

.15481

6.45961

.17273

5.78938

.19076

5.24213

.20891

4.7S673

12

49

.15511

6.44720

.17303

5.77936

.19106

5.23391

.20921

4.77978

11

50

.15540

6.43434

.17333

5.76937

.19136

5.22566

.20952

4.77236

10

51

.15570

6.42253

.17363

5

75941

.19166

.5.21744

.20982

4.76595

9

52

.15600

6.41026

.17393

5

74949

.19197

5.20925

.21013

4.75906

8

53

.15630

6.39804

.17423

5

73960

.19227

5.20107

.21043

4.75219

7

54

.1.5660

6.33587

.17453

5

72974

.192.57

5.19293

.21073

4.74534

6

55

.15639

6.37374

.17483

5.71992

.19237

5.18480

.21104

4.73851

5

56

.15719

6.36165

.17513

5.71013

.19317

5.17671

.21134

4.73170

4

67

.15749

6.34961

.17543

5.70037

.19:347

5.16363

.21164

4.72490

3

58

.15779

6.33761

.17573

5.69064

.19378

5.16053

.21195

4.71813

2

59

.15309

6.32566

.17603

5.63094

.19403

5.15256

.21225

4.71137

1

60 1

.15838

6.31375

.17633 Cotang.

5.67123

.19433

5.14455

.21256

4.70463

0 ftl.

Cotang.

Tang.

Tang.

Cotang.

Tang.

Cotang.

Tang.

81° 1

803 1

793 1

783 1

TABLE XV. NATURAL TANGENTS AND COTANGENTS. 233

M.

0

130

130 1

1*0

150

M.

60

Tang.

Cotang.

Tang.

Cotang. ^

Cang.

Cotaug.

Tang.

Cotang.

21256

4.70463

.23087

4.33148 .

24933

4.01078

.26795

3.73205

1

.2I2S6

4.69791

.23117

4.32573 .

24964

4.00582

.26826

3.72771

59

2

.21316

4.69121

.23148

4.32001 .

24995

4.00086

.26857

3.72338

58

3

.21347

4.68452

.23179

4.314.30 .

25026

3.99592

.26883

3.71907

57

4

.21377

4.67786

.23209

4.30S60 .

25056

3.99099

.26920

3.71476

66

5

.21408

4.67121

.2.3240

4.30291 .

25087

3.93607

.26951

3.71046

55

6

.21433

4.66458

.23271

4.29724 .

25118

3.98117

.26982

3.70616

54

7

.21469

4.65797

.2.3301

4.29159 .

25149

3.97627

.27013

3.70188

53

8

.21499

4.65133

.23332

4.2S595 .

25180

3.97139

.27044

3.69761

52

9

.21529

4.64480

.23363

4.28032 .

25211

3.96651

.27076

3.69335

51

10

.21560

4 63825

.23393

4.27471 .

25242

3.96165

.27107

3.68909

60

11

.21.590

4 63171

.23424

4.26911 .

25273

3.95680

.27138

3.68485

49

12

.21621

4.62518

.23455

4.26352 .

25304

3.95196

.27169

3.68061

48

13

.21651

4. 6 1 868

.23485

4.25795 .

253.35

3.94713

.27201

3.67638

47

14

.21682

4.61219

.23516

4.252.39 .

25366

3.94232

.27232

3.67217

46

15

.21712

4.60572

.23547

4.24685 .

25397

3.93751

.27263

3.66796

45

16

.21743

4.59927

.23578

4.24132 .

25428

3.93271

.27294

3.66376

44

17

.21773

4.. 592-^3

.23608

4.23580 .

2.5459

3.92793

.27326

3.65957

43

IS

.21804

4.58641

.23639

4.23030 .

25490

3.92316

.27357

3.65538

42

19

.21834

4.55001

.23670

4.22481 .

25521

3.91839

.27388

3.65121

41

2()

.21864

4.57363

.23700

4.21933 .

25552

3.91364

.27419

3.64705

40

21

.21895

4.56726

.23731

4.21387 .

25583

3.90890

.27451

3.64289

39

22

.21925

4.56091

.23762

4.20842 .

2.5614

3.90417

.27482

3.63874

38

23

.21956

4.55458

.23793

4.20293 .

25645

3.89945

.27513

3.63461

37

24

.21986

4.. 54826

.23823

4.19756 .

25676

3.89474

.27545

3.63048

36

25

.22017

4.54196

.23854

4.19215 .

25707

3.89004

.27576

3.62636

35

26

.22047

4.53568

.23885

4.18675 .

25738

3.88536

.27607

3.62224

34

27

.22078

4.52941

.2.3916

4.18137 .

25769

3.88068

.27633

3.61814

33

28

.22108

4..52316

.23946

4.17600 .

25800

3.87601

.27670

3.61405

32

29

.22139

4.51693

.23977

4.17064 .

2.5831

3.87136

.27701

3.60996

31

30

.22169

4.51071

.24008

4.16530 .

25862

3.86671

.27732

3.605SS

30

31

.22200

4.50451

.24039

4.15997 .

25893

3.86208

.27764

3.60181

29

32

.22231

4.49832

.24069

4.15465 .

25924

3.85745

.27795

3..59775

28

33

.22261

4.49215

.24100

4.149.34 .

25955

3.85284

.27826

3.59370

27

34

22292

4.48600

.24131

4.14405 .

259S6

3.84824

.27858

3.58966

26

35

22322

4.47986

.24162

4.13877 .

26017

3.84.364

.27889

3.55562

25

36

22.353

4.47374

.24193

4.13350 .

26048

3.83906

.27921

3.58160

24

37

22383

4.46764

.24223

4.12825 .

26079

3.8.3449

.27952

3.57758

23

38

22414

4.46155

.24254

4.12301 .

26110

3.82992

.27933

3.-57357

22

39

22444

4.45548

.24285

4.11778 .

26141

3.82.537

.28015

3.56957

21

40

.22475

4.44942

.24316

4.11256 .

26172

3.82083

.28046

3.56557

20

41

.22505

4.44.3.38

.24347

4.10736 .

26203

3.81630

.28077

3.561.59

19

42

.22536

4.4.3735

.24377

4.10216 .

26235

3.81177

.28109

3.55761

18

43

.22567

4.43134

.21408

4.09699 .

26266

3.80726

.28140

3. .55364

17

44

.22597

4.42534

.244.39

4.09182 .

26297

3.80276

.28172

3.54963

16

45

.22623

4.41936

.24470

4.0S666 .

26328

3.79S27

.28203

3. .54573

15

46

.22658

4.41.340

.24.501

4.08152 .

26359

3.79.378

.23234

3..54179

14

47

.22689

4.40745

.24.532

4.076.39 .

26390

3.78931

.28266

3.5.3785

13

48

.22719

4.401.52

.24562

4.07127 .

26421

3.78485

.28297

3.. 53393

12

49

.22750

4.39560

.24.593

4.06616 .

26452

3.78040

.2S329

3.53001

11

50

.22781

4.38969

.24624

4.06107 .

26483

3.77.595

.2*360

3.52609

10

51

.22811

4.3S381

.246.55

4.05599 .

26515

3.771.52

.28.391

3. .522 19

9

52

.22842

4.37793

.246S6

4.05092 .

26546

3.76709

.28423

3.51829

8

53

.22872

4.37207

.24717

4.04586 .

26577

3.76268

.28454

3.51441

7

54

.22903

4..36623

.24747

4.04081 .

26608

3.75828

.28486

3.51053

6

55

.22934

4.36040

.24778

4.03578 .

26639

3.75388

.28517

3.50666

5

56

.22964

4.354.59

.24809

4.03076 .

26670

3.749.50

.28549

3.50279

4

57

.22995

4.34879

.24840

4.02574 .

26701

3.74512

.28580

3.49894

3

58

.23026

4.34300

.24871

4.02074 .

26733

3.74075

.28612

3.49509

2

59

.23056

4.. 33723

.24902

4.01576 .

26764

3.73640

.28643

3.49125

1

60

m:

.23(:87

4..3:3143

.24933

4.01078 .

26795

3.73205

.28675

3.48741

0 M.

Co tang.

Tang.

Cotang.

Tang. C

:tang.

Tang.

Cotang.

Tang.

i

TO

reo 1

750

7

4:0

u;j4

. TABLE XV.

NATl

URAL TANGENTS AND

COTANGENTS

M.

0

160

170

18^

190

M.

60

Tang.

.23675

Cotang.

Tang.

Cotang.

Tang.

.32492

I Cotang. 3.07763

Tang.

Cotang.

2.90421

3.43741

.30573

3.27035

-34433

1

.28706

3.43.359

.30605

3.26745

.32.524

3.07464

.34465

2.90147

59

2

.23738

3.47977

.-30637

3.26406

..32556

3.07160

.34493

2.89373

58

3

.23769

3.47596

.30669

3.26067

.32533

.3.06357

.34530

2.89600

57

4

.28800

3.47216

.30700

3.25729

.32621

3.06554

.34563

2.89327

56

5

.23832

3.46337

.-307-32

3.25392

-32653

3.062-52

-34596

2.89055

55

6

.23S&4

3.46453

..30764

3.25055

.32635

3.059-50

.34628

2.83783

54

7

.23S95

3.46030

.30796

3.24719

.32717

3.05649

.34661

2.8351 1

53

8

.23927

3.45703

.30823

3.24333

.32749

3.05349

.34693

2.33240

52

9

, .28953

3.45.327

.30360

3.24049

.32732

3.05049

.-34726

2.87970

51

10

.28990

3.44951

.-30391

3.2.3714

.32814

3.04749

.34758

2.87700

50

11

.29021

3.44576

.30923

3.23-331

.32346

3.04450

.34791

2.S7430

49

12

.29053

3.44202

.30955

3.2304S

.32373

-3.041.52

.34824

2.37161

43

13

.29034

3.43323

.3'i9';7

3.22715

.32911

3.0.3354

.34356

2.86392

47

14

.29116

3.434.56

.31019

3.22-334

.32943

3.03556

-343S9

2.86624

46

15

.29147

3.43084

.31051

3.22053

..32975

3.03260

.34922

2.S6356

45

16

.29179

3.42713

.31083

.3.21722

.a3007

3.02963

.349.54

2.86039

44

17

.29210

3.42343

.31115

,3.21-392

.33040

3.02667

.34987

2.85822

43

13

.29242

.3.41973

.31147

.3.21063

.33f)72

3.02372

.3-5020

2.85555

42 :

19

.29274

.3.41604

.31178

3.20734

-33104

3.02077

..35052

2.8.5239

41

20

.29305

3.412.36

.31210

3.20406

.331-36

3.01733

.3.5035

2.85023

40 1

21

.29337

3.40^69

.31242

3.20079

.-33169

3.01439

.35113

2.S475S

39 ;

22

.29363

3.40502

.31274

-3.19752

..33201

.3.01196

.351.50

2.84491

38

23

.29400

3.401.36

.31306

-3-19426

.3.3233

3.00903

.35133

2.8-1229

37 !

24

.29432

3.. 39771

.31333

3.19100

.-33266

3.00611

.3.5216

2.83965

36 i

25

.29463

3.. 39406

.31370

3.13775

.33293

3.00319

.3.5248

2.83702

35

26

.29495

3.39042

.31402

3.13451

.33330

3.00023

.35231

2.83439

34

27

.29.526

3.33679

.314-^

3 18127.

.-33.363

2.997.33

.35314

2.83176

33

23

.29558

3..38317

.31466

-3. i 7304

.33-395

2.99447

.3.5346

2.82914

32

29

.29590

3.37955

-31493

3.17431

.-3-3427

2.99158

.35379

2.82653

31

30

.29621

3.37594

.31530

3.17159

.33460

2.93363

..3-5412

2.82391

.30

31

.29653

3.-372.34

.31562

3.16333

.3-3492

2.93530

.35445

2.82130

29

32

.29635

3.-36375

.31.594

3.16517

.33524

2.93292

.35477

2.81870

23

33

.29716

3.36516

.31626

3.16197

.335-57

2.93004

.3.5510

2.SI610

27

34

.29743

3.36153

.31653

3.15377

.3-3559

2.97717

.-35-543

2.81350

26

35

.29730

3.35800

.31690

3.15558

-33621

2.974-30

.35576

2.81091

25

36

.29311

3.35443

.31722

3.15240

.-3-36.54

2.97144

..35603

2.60333

24

37

.29343

3. .3-5037

.31754

3.14922

.33636

2.963-58

.3.5841

2.S0574

23

3S

.29875

3.347-32

.31786

3.14605

.33718

2.96573

.35674

2.80316

22

39

.29906

3.34377

.31818

3.14288

.-33751

2.96283

..35707

2.80059

21

40

.29933

3.ai023

.31850

3.1-3972

.-33733

2.96004

..35740

2.79S02

20

41

.29970

3.33670

.31832

3.136-56

..3-3316

2.95721

.35772

2.79545

19

42

.30001

3.-3-3317

.31914

3.13-341

.3-3348

2.9-5437

..35305

2.79289

18

43

..30033

3.32965

.31946

3.1.3027

..3-3381

2.951-55

.35838

2.79033

17

44

.30065

3.32614

.31973

3.12713

-33913

2.94372

.35371

2.78773

16

45

..30097

3.-32264

.32010

3.12400

.33945

2.94591

.35904

2.78523

15

46

.30128

3.31914

.32042

3.12087

.33978

2.94309

.35937

2.78269

14

47

.30160

3.31-565

.32074

3.11775

.34010

2.94028

.35969

2.78014

13

48

.30192

3.31216

.32106

3.11464

.34043

2.9-3748

.36002

2.77761

12

49

.30224

3. -3036 3

.32139

3.11153

.34075

2.93463

.36035

2.77507

11

50

.30255

3.30521

.32171

3.10342

.34108

2.93189

.36068

2.772.54

10

51

.30237

3.-30174

..32203

3.10532

.34140

2.92910

..36101

2.77002

9

52

.30319

3.29329

..32235

3.10223

.34173

2.92632

.36134

2.76750

8

53

.30.351

3.29433

..32267

3.09914

.31205

2.92.3-54

.36167

2.76493

7

54

.30382

-3.291-39

.32299

3.09606

.34233

2.92076

.36199

2.76247

6

55

.30414

3.23795

.-32-331

3.09295

.34270

2.91799

.362-32

2.75996

5

56

.30446

3.234-52

.32.363

3.03991

.34303

2 91.523

..36265

2.75746

4

57

.30478

3.23109

.32396

3.03635

.343.35

2.91246

.36298

2.75496

3

58

.30509

3.27767

.32428

3.08-379

..34363

2.90971

.36331

2.75246

2

59

.30.541

3.27426

.32460

3.03073

.34400

2.90696

.36364

2.74997

1

60 M.

.30573

3.27035

.32492

3.07768

.34433

2.90421

.36397

2.74743

0 M.

Cotang.

Tang.

Cotang.

Tang.

Cotang.

Tang.

Cotang.

Tang.

T33 1

73° 1

71^ \

703 1

TABLE X\^

NATURAL TANGENTS AND COTA.'JGENTS. 235

M.

20^

31^

/

8

9 10 11 12 13 14 15

16 17 18 19 20 21 22 23 24 25 26 27 23 29 30

31

32 33 34 35 36 37 38 39 40 41 42 43 44 45

46 47 48 49 50 51 52 53 54 55 56 57 53 59 60

m;

T36397 .36430 .36463 .364% .36529 .36562 .36595 .36628 .36661 .36694 .36727 .36760 .36793 .36S26 .36859 .36892

.36925 .36958 .36991 .37024 .37057 .37090 .37123 .37157 .37190 .37223 .37256 .37289 .37322 .37355 .37333

.37422 .37455 .37438 .37521 .37554 .37583 .37621 .37654 .37687 .37720 .37754 .37787 .37820 .37353 .37837

.37920 37953 .37936 .33020 .38053 .33036 33120 .33153 .33186 . 3^221) .3=!2.-)3 .3-2-6 .3-320 .3-353 .38:386

Cotang.

Cotang. Tang.

2.74748 2.74499 2.74251 2.74004 2.73756 2.73509 2.73263 2.73017 2.72771 2.72526 2.72281 2.72036 2.71792 2.71548 2.71305 2.71062

2.70819 2.70577 2.70335 2.70094 2.69853 2.69612 2.69371 2.69131 2.68892 2.68653 2.63414 2.63175 2.67937 2.67700 2.67462

2.67225 2.66939 2.66752 2.66516 2.66231 2.66046 2.65811 2.6.5576 2.65342 2.65109 2.64875 2.64642 2.64410 2.64177 2.63945

2.63714

2.634S3

2.63252

2.63021

2.62791

2.62.561

2 62332

2.62103

2.61^74

2.61646

2.61418

2.61190

2 60963

2.60736

2.60509

Cotang.

.33336 .33420 .33453 .38487 .38520 .38553 .38587 .38620 .33654 .33687 .3^721 .33754 .38787 .38321 .33354 .33888

.33921 .33955 .38988 ..39022 .390.55 .39089 .39122 .39156 .39190 .39223 .39257 .39290 .39324 .39357 .39391

.39425 .39453 .39192 .39526 .39559 .39593 ..39626 .39660 .39694 .39727 .39761 .39795 .39829 .39362 .39896

..39930 .39963 .39997 .40031 .40065 .40093 .401,32 .40166 .40200 .40234 .40267 .40301 .40335 .40369 .40103

a^j

23C

Tang.

Tang.

69=

2.60509 2.60283 2.60057 2.59331 2.59606 2.593>1 2.59156 2.53932 2.58703 2.53434 2.53261 2.58038 2.57815 2.57593 2.57371 2.57150

2.56923 2.56707 2.56487 2.56266 2.56046 2.55827 2.55608 2.553S9 2.55170 2.54952 2.54734 2.54516 2.54299 2.b40S2 2.53365

2.53643 2.-53432 2.53217 2.53001 2.52786 2.52571 2.52357 2.52142 2.51929 2.51715 2.51502 2.51289 2.51076 2.50364 2.50652

2.50440 2.50229 2 50018 2.49807 2.49.597 2.49336 2.49177 2.4-!967 2.487.58 2.43549 2.48340 2.48132 2.47921 2.47716 2.47509

Cotang. Tang. 68=

.40403 .40136 .40470 .41)504 .40538 .40572 .40606 .40640 .40674 .40707 .40741 .40775 .40309 .40843 .40377 .4091 1

.40945 .40979 .41013 .41047 .41081 .41115 .41149 .41183 .41217 .41251 .41235 .41319 .41353 .41337 .41421

.41455 .41490 .41524 .41558 .41592 .41626 .41660 .41694 .41723 .41763 .41797 .41331 .41365 .41399 .41933

.41963 .42002 .420.36 .42070 .42105 .42139 .42173 .42207 .42242 .42276 .42310 .42345 .42379 .42413 .42447

Cotang.

■2.47509 2.47302 2.47095 2.46883 2.46632 2.46476 2.46270 2.46065 2.45860 2.45655 2.45451 2.45246 2.45043 2.44^39 2.44636 2.44433

2.44230 2.44027 2.43325 2.43623 2.43422 2.43220 2.43019 2.42819 2.42618 2.42418 2.42213 2.42019 2.41819 2.41620 2.41421

2.41223 2.41025 2.40827 2.40629 2.40432 2.40235 2.40033 2.39841 2.39645 2.39449 2.392.53 2.39053 2.33>63 2.3^66^ 2.33473

2.38279 2.. 33034 2.. 37891 2.37697 2.37504 2.37311 2.37118 2.36925 2.367.33 2.36541 2.36349 2.36158 2.35967 2.35776 2.35585

Tang. I Cotang.

.42147 .424^2 .42516 .42.551 .425S5 .42619 .42654 .42638 .42722 .42757 .42791 .42826 .42-:'60 .42394 .42929 .42963

.42998 .43032 .43067 .43101 .431.36 .43170 .43205 .43239 .43274 .43308 .43343 .43378 .43412 .43447 .43431

.43516 .43550 .4.3535 .43620 .436.54 .43639 .43724 .43758 .43793 .43328 .43362 .43897 .43932 .43966 .44001

.44036 .44071 .44105 .44140 .44175 .44210 .44244 .44279 .44314 .44349 .44334 .44418 .44453 .444.83 .44523

Cotang. Tang 67=

2.35585 2.35395 2.35205 2.35015 2.34825 2.34636 2.34447 2..34258 2.34069 2.33881 2 33693 2 33505 2,33317 2.33130 2.32943 2.32756

2..32570 2.32383 2.32197 2.32012 2.31826 2.31641 2.31456 2.31271 2. 31 086 2.30902 2.30718 2.30.5.34 2.30351 2.30167 2.29984

2.29801 2.29619 2.29437 2.29254 2.29073 2.28S91 2.23710 2.28523 2.283-18 2.28167 2.27987 2.27506 2.27626 2.27447 2.27267

2.27033 2.26909 2.26730 2.265.52 2.26374 2.2615:6 2.26013 2.25840 2.25663 2.25436 2.2.5309 2.25132 2.24956 2.24780 2.24604

M.

60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45

44 43 42 41 40 39 33 37 36 35 34 33 32 31 30

29 28 27 26 25 24 23 22 21 20 19 18 17 16 15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

Cotang. Tang 663

sat

) TABLE XV.

NATURAL TANGENTS AND COTANGENTS

!•

M

0

1 340

353

2&0

370

1

Tang. , .44523

Cotang.

Taog.

Cotang. 2.14451

Tang.

.43773

Cotang. 2.05030

Tang.

Cotang.

1.96261

M.

60

2.24604

.46631

.50953

1

.44553

2.24423

.46666

2. 142S3

.43309

2.04379

.50939

1.96120

59

2

.44593

2.24252

.46702

2.14125

.43345

2.04723

.51026

1.95979

58

3

.44627

2.24077

.46737

2.13963

.43Ssl

2.04577

.51063

1.953.38

57

4

.44662

2.23902

.46772

2.13<01

.43917

2.04426

.51099

]. 95698

56

5

.44697

2.23727

.46-03

2.136-39

.4^953

2.04276

.51136

1.95557

55

6

.44732

2.2.3553

.46>43' 2.1.3477

43939

2.04125

.51173

1.9.5417

54

7

.44767

2.233/->

.46379

2.1.3316

.49026

2.0.3975

.51209

1.95277

53

8

.44S02

2.2321)4

.46914

2.13154

.49062

2.03825

.51246

1.95137

52

9

.44337

2.2.3030

.46950

2.12993

.49093

2.0.3675

.51283

1-94997

51

10

.44372

2.22S57

.46935

2.12332

.491.34

2.03526

.51319

1.94358

50

11

.44907

2.22633

.47021

2.12671

.49170

2.03376

.51-356

1.94718

49

12

.44W2

2.22510

.47056

2.12511

.49206

2.03227

.51393

1.94579

43

13

'■ .44977

2.22337

.47092

2.123-50

.49242

2.03073

.514.30

1.94440

1 47

14

1 .45012

2.22164

.47123

2.12190

.49273

2.02929

.51467

1.94.301

46 ,

15

: .45047

2.21992

.47163

2.12030

.49315

2.027S0

.51503

1.94162

45

16

.450S2

2.21319

.47199

2.1 1371

.49351

2.02631

.51;540

1.94023

44

17

.45117

2.21647

.472-34

2.11711

.49337

2.02433

.51.577

1.9.3885

43

18

.45152

2.21475

.47270

2.11552

.49423

2.02335

.51614

1.9.3746

42

19

.45187

2.21:304

.47.305

2.11.392

.49459

2.02187

.51651

1.9.3608

41

20

.45222

2.21132

.47311

2-11233

.49495

2.02039

.51633

1.93470

40

21

.45257

2.20961

.47377

2.11075

.49532

2.01391

.51724

1.93-332

39

22

.45292

2.2)79:1

.47412

2.10916

.49-563

2.01743

.51761

1.93195

38

23

.45.327

2.20619

.47443

2.10753

.49604

2.01596

.51798

1.9.3057

37

24

.4.5362

2.20449

.47433

2.10600

.49640

2.01449

.51835

1.920-.40

36

25

.45397

2.20273

.47519

2.1W42

.49677

2.01302

.51372

1.92782

35

26

.454.32

2.20103

.47555

2.10234

.49713

2.01155

.51909

1 92&45

34

27

.45467

2.1993S

.47590

2.10126

.49740

2.01008

.51946

i. 92503

33

28

.4.5502

2.19769

.47626

2.09969

.49736

2.00=62

.51983

1.92371

32

29

.45533

2.19-599

.47662

2.09311

.49322

2.00715

.52020

1.92235

31

30

.45573

2.194.30

.47693

2.09654

.493.53

2.00569

..52057

1.92093

30

31

.45603

2.19261

.47733

2.0349S

.49394

2.004V3

.520G1

1.91962

29

32

.45643

2.19092

.47769

2.09.341

.49931

2.00277

.52131

1.91326

28

33

.45673

2.13923

.47305

2.09134

.49967

2.00131

.55163

1.91690

27

34

.45713

2.13755

.47^^0

2.09023

.50004

1.999-6

.52205

1.91554

26

35

.45743

2.13.537

.47876

2-03372

..50040

1.99341

.52242

1.91418

25

36

.45731

2.13419

.47912

2.03716

..50076

1.99695

.52279

1.91232

24

37

.45319

2.13251

.47943

2.03560

.50113

1.99.550

..52316

1.91147

23

38

.453:54

2.13034

.47934

2.03405

..50149

1.99406

.52353

1.91012

22

39

.45389

2.17916

.43019

2.03250

.50135

1.99261

.52-390

1.90376

21

40

.4.5924

2.17749

.430.55

2.03094

.50222

1.99116

.52427

1.90741

20

41

.45960

2.17.532

.43091

2.07939

.50253

1.93972

.52461

1.90607

19

42

.45995

2.17416

.43127

2.07785

.50295

1.93328

.52.501

1.90472

18

43

.46030

2.17249

.43163

2.076.30

..50331

I.986&}

.525.38

1.90.3.37

17

44

.46065

2.17033

.43193

2.07476

.50363

1.93540

.52575

1.90203

16

45

.46101

2.16917

.43234

2.07321

.50404

1.93396

.52613

1.90069

15

46

.461.36

2.16751

.43270

2.07167

.50441

1.932.53

.52650

1.89935

14

47

.46171

2.16535

.43306

2-07014

.50477

1.93110

.52637

1.89301

13

4S

.46206

2.16420

.43342

2 06360

.50514

1.97966

.52724

1.89667

12

49

.46242

2.162.55

.43378

2.06706

.50550

1.97323

..52761

1.89.533

11

50

.46277

2.16090

.43414

2-06-5.53

.50537 1

1.97631

.52793

1 .89400

10

51 1

.46312

2.15925

.43450

2.06400

.50623

1.97.5.33

.52836

1.89266

9

52

.46.343

2.15760

.43436

2.06247

.50660

1 97395

52373

1.89133

8

53

.46.333

2.15.596

.43521

2.06094

.50696

1.97253

.52910

1.89000

7

54

.46418

2.1.54.32

.4S557

2.05942

.50733

1.97111

.52917

1. 83367

6

55

.464.54

2.1.5263

.43593

2.05790

.50769

1.96969

.52935

1.83734

5

56

.46439

2.15104

.43629

2.05637

.50806

1.96327

.53022

1.88602

4

57

.46525

2.14940

.43665

2.05435

.50843

1.96635

.53059

1.88469

3

58

.46560

2.14777

.48701

2.05333

.50379

1.96544

.53096

1.83337

2

59

.46595

2.14614

.43737

2. 05 182

..50916

1.96402

.53134

1.88205

1

60;

.46631

2.14451

.43773

2.0.5030 Tang. (

.50953 IJotang.

1.96261

..53171

1.88073 Tang. ]

0

M. Cotang. !

Tang.

Cotang.

Tang. <

;:!otang.

i

■s::

6i

5C

64° 1

633 1

633 1

lABLE XV. NATURAL TANGENTS AND COTA/JGENTS. 23T

M

0

aso

393

30O

310

M.

60

Tang.

.53171

Cotang.

Tang.

Cotang.

Tang. .57735

Cotang. 1.73205

Tang.

Cotang.

1.88073

.55431

1.80405

.60086

1.6642-5

1

.53208

1.87941

.55469

1.80231

.57774

1.73089

.60126

1.66318

59

2

.53246

1.87809

.55507

1.80158

.57813

1.72973

.60165

1.66209

58

3

.53283

1.87677

.55.545

1.80034

.57851

1.72357

.60205

1.66099

57

4

.53320

1.87546

.55583

1.79911

.57890

1.72741

.60245

1.65990

56

5

.53358

1.87415

.55621

1.7978S

.57929

1.72625

.602.34

1.65S81

55

6

.53395

1.87233

.55659

1.79665

.57968

1.72509

.60324

1.65772

54

7

.53432

1.87152

.55697

1.79542

..58007

1.72393

.60364

1.65663

53

8

..53470

1.87021

.55736

1.79419

.58046

1.72278

.60403

1.65554

52

9

.53507

1.86391

.55774

1.79296

.53035

1.72163

.60443

1.65-145

51

10

.53545

1.86760

.5.5812

1.79174

.581^

1.72047

.60483

1.65337

50

11

.53582

1.86630

.55850

1.79051

.58162

1.71932

.60522

1.65228

49

12

.53620

1.86499

.55838

1.78929

.58201

1.71817

.60562

1.65120

48

13

.53657

1.86369

.55926

1.78507

..58240

1.71702

.60602

1.6.5011

47

14

.53694

1.862.39

.55964

1.78635

.58279

1.71588

.00642

1.64903

46

15

.53732

1.86109

.56003

1.78563

.58318

1.71473

.60681

1.64795

45

1

16

.53769

1.85979

.56041

1.78441

.58357

1.71358

.60721

1.64687

44

17

.53307

1.85350

.56079

1.78319

.53396

1.71244

.60761

1.61579

43

18

.53844

1.85720

.56117

1.78198

..58435

1.71129

.60801

1.64471

42

19

.5.3882

1.85591

.561.56

1.78077

.58474

1.71015

.60841

1.64363

41

2n

.53920

1.85462

.56194

1.77955

.58513

1.70901

.60381

1.64256

40

21

.53957

1.85333

..56232

1.77^34

.58552

1.70787

.60921

1.64148

39

22

.53995

1.85204

..56270

1.77713

.58591

1.70673

.60960

1.64041

33

23

.54032

1.8.5075

.56309

1.77592

.58631

1.70560

.61000

1.63934

37

24

.54070

1.84946

..56347

1.77471

.58670

1.70446

.61040

1.63826

36

25

..54107

1. 84318

.56335

1.77.351

.58709

1.70332

.61080

1.63719

35

26

.54145

1.64683

.53424

1.77230

.58748

1.70219

.61120

1.63612

34

27

.51183

1.84561

.56462

1.77110

.58787

1.70106

.61160

1. 63505

33

23

.54220

1.84433

..56501

1.76990

.58826

1.69992

.61200

1.63398

32

29

.542:58

1.84305

.56539

1.76369

..58865

1.69379

.61240

1.63292

31

80

.54296

1.84177

.56577

1.76749

.58905

1.69766

.61280

1.63185

30

31

.54333

1.84049

.56616

1.76629

.58944

1.696.53

.61320

1.63079

29

32

.54.371

1.83922

.56651

1.76510

.58983

1.69541

.61360

1.62972

28

33

.54409

1.83794

.56693

1.76390

.59022

1.69423

.61400

1.62866

27

34

.54446

1.83667

..56731

1.76271

.59061

1.69316

.61440

1.62760

26

35

.54434

1.83540

.56769

1.76151

.59101

1.69203

.61480

1.62654

25

36

.54522

1.83413

.56303

1.76032

.59140

1.69091

.61.520

1.62.548

24

37

.54560

1.83286

.56346

1.75913

.59179

1.63979

.61561

1.624-12

23

38

.54597

1.83159

.56335

1.75794

.59218

1.63866

.61601

1.62.336

22

39

.54635

1.83033

.56923

1.75675

.59258

1.63754

.61641

1.62230

21

40

.54673

1.82906

.56962

1.75556

.59297

1.63643

.61681

1.62125

20

41

.5^1711

1.827S0

.57000

1.75437

.59336

1.68531

.61721

1. 6201 9

19

42

.54743

1.82654

.57039

1.75319

.59376

1.63419

.61761

1.61914

18

43

.54786

1.82523

.57078

1.75200

.59415

1.68308

.61801

1.61803

17

44

.54324

1.82402

.57116

1.7.5032

.59154

1.68196

.618-12

1.61703

18

45

.54362

1.82276

.57155

1.74964

.59494

1.63035

.61882

1.61593

15

46

.54900

1.82150

.57193

1.74346

.59533

1.67974

.61922

1.61493

14

47

.549:«

1.82025

.57232

1.74728

.59573

1.67863

.61962

1.61338

13

48

.54975

1.81899

.57271

1.74610

.59612

1.67752

.62003

1.61233

12

49

.5.5013

1.81774

.57309

1.74492

.59651

1.67641

.62043

1.01179

11

50

.55051

1.81649

..57343

1.71375

.59691

1.67530

.62033

1.61074

10

51

.55a39

1.81524

.57336

1.74257

.59730

1.67419

.62124

1.60970

9

52

.55127

1.81399

.57425

1.74140

.59770

1.67309

6216^1

1.60665

8

53

.55165

1.81274

.57464

1.74022

.59809

1.67198

.62204

1.60761

7

54

.5.5203

1.81150

.57503

1.7.3905

.59849

1.67088

.62245

1.60657

6

55

.55241

1.81025

.57541

1.73788

.59883

1.66978

.62235

1.60553

5

56

.55279

1.80901

.57580

1.73671

..59928

1.66867

.62.325

1.60449

4

57

.55317

1.80777

..57619

1.7.3555

.59967

1.66757

.62366

1.60345

3

58

.55355

1.80653

.57657

1.73138

.60007

1.66647

.62406

1.60241

2

59

.55393

1.80529

.57696

1.73.321

.600-16

1.66538

.62446

1.60137

1

60 M.

.55431

1.80405

.57735

1.73205

.60086

1.66423

.62487

1.60033

0 M.

Cotang. 6

Tang.

Cotang.

Tang.

Cotang.

Tang.

Cotang.

Tang.

602

5

.93

5

83

238 TABLE XV. NATURAL TANGENTS AND COTANGENTS.

M 0

323

33^ 1

34 ;

3

5^

M.

60

Tang. .624S7

Cctang. 1.600.33

Tang.

Cotang.

Tang. .67451

Cotang. 1.45-2-56

Tang.

Cotang. 1.4-2>15

.64941

1.5:39^6

.70021

1

.62527

I.. 59930

.649-2

1.53S5S

.67493

1.43 1 63

.70C64

1.42726

59

2

.62.563

1.59326

.65024

1.53791

.675:36

1.43070

.70107

1.426:33

58

3

.62603

1.59723

.65065

1.53693

.67573

1.47977

.70151

1.42550

57

4

.62649

1.596-20

.65106

1.. 53595

.67620

1.47335

.70194

1.42462

56

5

.62639

1.59517

.65143

1.53497

.67663

1.47792

.70233

1.42374

55

6

.62730

1.59414

.65159

1.534G0

.67705

1.47699

.70231

1.42236

54

7

.62770

1.59311

.65231

1.5:3:302

.67743

1.47607

.70325

1.42198

53

8

.62311

1.59203

.65272

1.53205

.67790-

1.47514

.70.363

1.42110

52

9

.62352

1.59105

.6.5314

1.53107

.67332

1.47422

.70412

1.42022

51.

10

.62392

1.59002

.65-3.55

1.53010

.67375

1.47.3:30

.70455

1.419:3-1

50'

11

.62933

1.53900

.6-5397

1.52913

.67917

1.47233

704S9

1.41647

49

12

.62973

1.53797

.65433

1.52316

.67960

1.47146

.705^42

1.417.59

48

13

.63014

1.53695

.65450

1.52719

.63002

1.470.33

.■70536

1.41672

47

14

.63055

1.53.593

.63521

1.52622

.63045

1.46932

.70629

1.41-5.34

46

15

.63095

.1.53490

.6-5563

1.52525

.63033

1.46370

.70673

1.41497

45

16

.6-3136

1.5S333

.65604

1.52429

.63130

1.46773

.70717

1.41409

44

17

.63177

1.53236

.65646

1.523:32

.63173

1.46656

.70760

1.41322

43

13

.63217

1.53134

.65633

1.522-35

.63215

1.46595

.70804

1.41-235

42

13

.63253

1.53033

.65729

1. 52139

.65-253

1 .46503

.70348

1.41148

41

20

.63299

1.57931

.65771

1.52043

.6530!

1.46411

.70391

1.41C61

40

. 21

.6-3:340

1.57379

.65313

1.51946

.65-343

1.46.3-2(J

.709.35

1.40974

39

; 22

.6-3-350

1.57773

.655.54

1.51350

.65.356

1.46229

.70979

1.40S37

33

23

.63121

1.57676

.65396

1.51754

.65429

1.46137

.710-23

1.40300

37

24

.6-3462

1.57575

.65933

1.51653

.63471

1.46046

.71066

1.40714

36

25

.6-3503

1.57474

.65950

1.51562

.65514

1.4.5955

.71110

1.40627

35

26

.6.3->14

1.57372

.66021

1.51466

.65557

1.4-5564

.71154

1.40-510

M

27

.63.534

1.57271

.60G63

1.51370

.63600

1.45773

.71193

1.4W54

.33

28

.63625

1.57170

.66105

1.51275

.63642

1.45632

.71242

1.40367

32

29

.63666

1.57069

.66147

1.51179

.63635

1.4-5592

.71235

1.40231

31

30

.63707

1.56969

.66159

1.51034

.63723

1.45501

.71329

1.40195

30

31

.63743

1.56563

.66230

1.50933

.63771

1.4.5410

.71373

1.40109

29

32

.63739

1.56767

.66272

1.50393

.63314

1.45320

.71417

1.4'X)22

28

as

.6:3330

1.56667

.66314

1.50797

.63357

1.45229

.71461

1.39936

27

34

.63371

1.56566

.66:356

1.50702

.63900

1.45139

.71505

1.39350

26

35

.63912

1.56466

.66393

1.-50607

.63942

1.4-5049

.71549

1.39764

25

36

.639.53

1.56-366

.66440

1.50512

.63985

1.44953

.71593

1.39679

24

37

.63994

1.56265

.664^2

1.50417

.69028

1.44563

.71637

1.39-593

23

33

.&4035

1.56165

.66-524

1.50322

.69071

1.44773

.71631

1.39507

22

39

.64076

1.56065

.66566

1.50223

.69114

1.44633

71725

1.39421

21

40

.&4117

1.. 5.5966

.66603

1.50133

.69157

1.44.593

71769

1.39336

20

41

.641-53

1.-55566

.66650

1.50033

.69200

1.44503

71813

1.392.50

19

42

.&4199

1.55766

.666.:.2

1.49944

.69-243

1.44413

.71857

1.39165

18

43

.64240

1.55666

.66734

1.49549

.69256

1.44.3-29

.71901

1.39079

17

44

.64231

1.55;'567

.66776

1 .49755

.69:329

1.442:39

.71946

1.35994

16

45

.643-22

1.55467

.66313

1.49661

.69:372

1.44149

.71990

1.33909

15

46

.61363

1.55363

.66360

1.49566

.69416

1.44060

.72034

1.33824

14

47

.64404

1.. 5.5269

.66902

1 .49472

.694-59

1.43970

.72073

1.357.38

13

48

.64446

1.55170

.66944

1.49373

.69-502

1.43531

.72122

1.35653

12

49

.64437

1.5.5071

.66936

1.49-234

.69-545

1.43792

.72167

1.33563

11

50

.64.528

1.-54972

.6702.3

1.49190

.69.533

1.43703

.72211

1.. 33134

10

51

.64-569

1.54373

.67071

1.49097

.69631

1.43614

.72255

1.33399

9

52

.64610

1.54774

.67113

1.49003

.69675

1.43:325

.72299

1.33314

8

53

.64652

1.54675

.67155

1.45909

.69718

1.434-36

.72.344

1.33229

7

54

.64693

1.54.576

.67197

1.43316

.69761

1.4.3347

.72.358

1.38145

6

55

.64734

1.54478

.672-39

1.48722

.69504

1.43253

.72432

1. 33060

5

56

.64775

1.54379

.67232

1.48629

.69347

1.43169

.72477

1.. 37976

4

57

.64SI7

1.54231

.67324

1.435.36

.69591

1.4.30SO

.72-521

1.37891

3

53

.643.53

1.54133

.67.366

1.45442

.69934

1.42992

.72565

1.37507

2

59

.64399

1.54035

.67409

1.43^9

.69977

1.42903

.72610

1.37722

1

j 60 f M.

1

.64941

1.. 5.3956

.67451

1.48-256 Tang. (

.7(021

1.42315 Tang.

.726.34

1.37638

0 M.

Gotang.

Tang.

Cotang.

Cotang.

Cotang. 5'

Tang.

to

5

r=

5

6= 1

5

53

TABLE XV. NATURAL TANGENTS AND COTANGENTS.

239

36

M.' Tang. Cotang.

1

21

3| 41 5 i 6i

rr

I

81

^1

10

11 1

12'

13 i

14 1

37^

10 '

16!

17 i

18!

19

20

21

22

2;i

2-1

25

26

27

23

29

30

.72654 ,

.72699 I

.72743 I

.72783

.72S32

.72S77

.72921

.72966

.73010

.7.3055

.73100

.73144

.731 S9

.73-234

.73278

.73323

.7336S

.73413

.73457

.73502

.73.547

.73592

\ .73637

\ .73631

;'. 73726

; .73771

\ .7.3S16

.7.3S61

.73906

.73951

.73996

31 .74041

32 I .74056 331 .74131 34 I .74176

.74221 .74267 .74312 .74357 .74402 .74447 .74492

Tang. Cotang.

35 36 37 33 39 40 41 42 43 44 45

46

47

48

49

50

51

52

53

54

55

56

57

53

59

60

.74533 .74-533

.74623 .74674

.74719

.74764

.74510

.74355

.74900

.74946

.74991

.75037

.75032

.75123

.75173

.75219

.75264

.75310

.75355

1 .37633

1.37554

1.37470

1.373S6

1.37302

1.3721S

1.37134

1.370^50

1.36967

1.36^33

1.36-00

1.. 367 1 6

1.36633

1.36549

1.3&166

1.36333

1.36300

1.36217

1.36134

1.36051

1.3.5963

1.3533^5

1.35302

1.35719

1.35637

1.3.5554

1.35472

1.353=9

1.35307

1.3.5-224

1.35142

1.3.5060

1.34973

1.34396

1.:34314

1.34732

1.34650

1.34563

1.34437

1.34405

1.34323

1.34242

1.34160

l.:31079

1.33993

1.33916

M.;Dotang.

1.33335

1.337.54

1.33673

1.33.592

1.33511

1.33430

1.33349

1.3.3263

1.33137

1.33107

1.33026

1.32946

1.32365

1.32735

1.32704

.75401

.7;5447

.75492

.75533

.75534

.75629

.75675

.75721_

.75767

.75312

.75353

.75904

.75950

.75996

.76042

.76033

.76134

.76130

.76226

.76272

.76313

.76364

.76410

.76456

,76502

.76543

.?6594

.76640

.76636

.76733

.76779

.76325

.76371

.76913

.76964

.77010

.770-57

.77103

.77149

.77196

.77242

.77239

.77335

.773S2

.77428

.77475

.77521

.77563

.77615

.77661

.77703

.77754

.77301

.77343

.77395

.77W1

.77933

.73035

.73082

.73129

38^

Tang.

1.32704

1.32624

1.32^544

1.32464

1.32.334

1.32.304

1.32224

1.32144

1.32064

1 31934

1.3190-1

1.31S25

1.31745

1.31666

1.31556

1.31507

1.31427

1.31343

1.31269

1.31190

1.31110

1.31031

1.30952

1.30373

1.30795

1.30716

1.30637

1.30553

1.30430

I.3<3401

1.30323

1.30244

1.30166

1.30037

1.30009

1.29931

1.293-53

1.29775

1.29696

1.29613

1.29.541

1.29463

1.29335

1.29307

1.29229

1.29152

Cotang.

39c

"

.73129

.73175

.78222

.78269

.78316

.76363

.73410

.78457

.76504

.73-551

.78598

.78645

.78692

.78739

.78786

.78834

.78831

.78928

.78975

.79022

.79070

.79117

.79164

.79212

.79259

.79-306 !

.79354

.79401

.79449

.79496

.79544

.79591

.796:39

.79636

.79734

.79781

.79329

.79377

.79924

.79972

.80020

.80067

.80115

.80163

.80211

.80253

1.27994

1.27917

1.27541

1.27764

1.27633

1.27611

1.27535

1.274-53

1.27,332

1.27396

1.27230

1.27 i53

1.27077

1.27C01

1.26925

1.26549

Tang. Cotang. ^M.

.60973

.Slu27

.51075

.51123

.81171

.81220

.81263

.81316

.81364

.81413

.81461

.81510

.81553

.81606

.81655

.81703

Tang.

53^

1.29074

1.2>997

1.23919

1.23342

1.23764

1.2.5637

1.25610

1.23533

1.23456

1.23379

1.28302

1.23-225

1.23143

1.23071

1 .27994

Cotang. Tang.

53=

1.26774

1.26693

1.266-22

1.26546

1.26471

1.26395

1.26319

1.26-244 I

1.26169

1.26093

1.26013

1.25943

1.25567

1.25792

1.25717

1.25642 1.25567 1.2-5492 1.2.5417 1.25343 1 .2-5-263 1.2:5193 1.25113 1.25044 1.24969 1.24595 1.245-20 1.24746 1.24672 1.24597

1.24523

1.24449

1.24375

1.24301

1.24227

1.24153

1.24079

1.24005

1.2-3931

1.23553

1.23784

1.23710

1.23637

1.23563

1.23490

Cotang. Tang. 513

.80306

.80354

.80402

.80450

.50493

.50546

.80594

.80642

.50690

.80733

.80736

.50334

.80552

.80930

.80973

.81752

.61300

.81849

.51593

.31946

.51995

.3-2044

.52092

.82141

.52190

.5-22.33

.R2287

.5^:336

.52335

.82434

.52453

.5-2.531

.5-2530

.32629

.5-2678

.52727

.3-2776

.82325

.32374

.52923

.5-2972

.53022

.83071

,53120

.53169

.83215

.53268

.83317

.83366

.83415

.83465

.53514

.53564

.83613

.53662

.33712

.83761

.8331 1

.83560

.33910

1.-23490

1.23416

1.2-3343

1.23270

1.23196

1.23123

1.2.30.50

1.22977

1.2-2904

1.22531

1.-2-2753

1.2-2635

1.-2-2612

1.2-2539

1.-2-2467

1.-2-23W

1.22321

1.22-249

1.22176

1.22104

1.22031

1.21S59

1.21586

1.21814

1.21742

1.21670

1.21593

1.215-26

1.21454

1.21352

1.21310

60

59

58

57

56

55

54

53

52

51

50

49

43

47

46

45

44

43

42

41

40

39

33

37

36

35

34

33

32

31

30

1.21-2.33

1.21166

1.21094

1.210-23

1.20951

1.20579

1.20503

1. -20736

1.20665

;. 20593

1.20522

1.20451

1.20379

1.20308

1.-20-237

1.20166 1.20095 1.20024 -..19953 1.19582 1.19511 1.19740 1.19669 1.19.599 1.19523 1.19457 1 19387 1.19316 1.19-246 1 19175

29

23

27

-26

25

24

23

22

21

20 19 18 17 16 15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

Cotang.^ Tang. M. 503 '1

240 TABLE XV. NATURAL TANGENTS AND COTANGENTS.

M.

0

4:03

4:10 1

4:

20

433 1

M.

60

1

! 1

1

Tang.

.S39I0

Cotang.

Tang.

Cotang.

Tang.

Cotang. 1.11061

Tang.

Cotang.

1.19175

.86929

1.15037

.90040

.93252

1.072.37

1

.83960

1.19105

.S6930

1.14969

.90093

1.10996

.93306

1.07174

59

(

2

.84009

1.19035

.87031

1.14902

.90146

1.10931

.93360

1.07112

58

3

.84059

1.18964

.87032

1.14334

.90199

1.10367

.93415

1.07049

57

4

.84103

1.18394

.87133

1.14767

.90251

1.10302

.93469

1.06937

56

5

.84153

1.18324

.871.34

1.14699

.90304

1.10737

.93524

1.06925

55

j

6

.84203

1.18754

.87236

1.14632

.90357

1.10672

.93578

1.06362

54

1

7

.84258

1.1 8634

.b72S7

1.14565

.90410

1.10607

.93633

1.06300

53

1

8

.84307

1.18614

.87333

1.14493

.90463

1.10543

.93638

1.06733

52

1

9

.84357

1.13544

.87339

1.14430

.90516

1.10473

.93742

1.06676

51

1

10

.84407

1.13474

.87441

1.14363

.90569

1.10414

.93797

1.06613

50

11

.84457

1.18404

.87492

1.14296

.90621

1.10349

.93352

1.06551

49

12

.84507

1.18334

.87543

1.14229

.90674

1.10235

.93906

1.06439

48

13

.84556

1.18264

.87595

1.14162

.90727

1.10220

.93961

1.06427

47

14

.84606

1.13194

.87646

1.14095

.90731

1.10156

.94016

1.06365

46

15

.84656

1.13125

.87693

1.14023

.90334

1.10091

.94071

1.06.303

45

16

.84706

1.13055

.87749

1.13961

.90337

1.10027

.94125

1.06241

44

17

.84756

1.17936

.87801

1.13394

.90940

1.09963

.94180

1.06179

43

18

.84306

1.17916

.87352

1.13323

.90993

1.09399

.94235

1.06117

42

19

.84356

1.17346

.87904

1.13761

.91046

1.09834

.94290

1.06056

41

20

.84906

1.17777

.87955

1.13694

.91099

1.09770

.94345

1.05994

40

21

.84956

1.17703

.88007

1.13627

.91153

1.09706

.94400

1.059.32

39

22

.85006

1.17633

.83059

1.13561

.91206

1.09642

.94455

1.0.5370

33

23

.85057

1.17569

.83110

1.13494

.91259

1.09573

.94510

1.0.5309

37

24

.85107

1.17500

.83162

1.13423

.91313

1.09514

.94565

1.05747

36

25

.85157

1.174.30

.83214

1.13361

.91366

1.09450

.94620

1.05635

35

26

.8.5207

1.17351

.83265

1.13295

.91419

1.09336

.94676

1.05624

34

27

.85257

1.17292

.83317

1.13223

.91473

1.09322

.94731

1.05562

33

23

.85303

1.17223

.83369

1.13162

.91526

1.09253

.94736

1.05501

32

29

.85353

1.17154

.83421

1.13096

.91530

1.09195

.94341

1.05439

31

30

.85403

1.17035

.83473

1.13029

.91633

1.09131

.94396

1.05378

30

31

.Si>453

1.17016

.83.524

1.12963

.91637

1.09067

.94952

1.05317

29

32

.85509

1.16947

.83576

1.12397

.91740

1.09003

.95007

1.05255

23

33

.8.5559

1.16378

.88623

1.12331

.91794

1.08940

.95062

1.05194

27

34

.85609

1.16309

.83630

1.12765

.91347

1.03876

.95113

1.05133

26

35

.85660

1.16741

.88732

1.12699

.91901

1.03813

.95173

1.05072

25

36

.85710

1.16672

.83784

1.12633

.91955

1.08749

.9.5229

1.05010

24

37

.85761

1.16603

.88336

1.12567

.92003

1.03636

.95234

1.04949

23

38

.85311

1.16535

.83333

1.12501

.92062

1.0S622

.9.5340

1.04333

22

39

.85362

1.16466

.83940

1.124.35

.92116

1.03-559

.95395

1.04327

21

40

.85912

1.16.393

.83992

1.12369

.92170

1.03496

.95451

1.04766

20

41

.85963

1.16.329

.89045

1.12303

.92224

1.03432

.95506

1.04705

19

42

.86014

1.16261

.89097

1.122.33

.92277

1.03369

.95562

1.04644

18

43

.86061

1.16192

.89149

1.12172

.92331

1.03306

.95618

1.04.533

17

44

.86115

1.16124

.89201

1.12106

.92335

1.03243

.95673

1.04.522

16

45

.86166

1.16056

.892.53

1.12041

.92439

1.03179

.95729

1.04461

15

46

.86216

1.15937

.89306

1.11975

.92493

1.03116

95785

1.04401

14

47

.86267

1.1.5919

.893.53

1.11909

.92547

1.03053

.95341

1.04340

13

48

.86318

1.1.5351

.89410

1.11844

.92601

1.07990

.95397

1.04279

12

49

.86363

1.1.5733

.89463

1.11778

.92655

1.07927

95952

]. 04218

11

50

.86419

1.15715

.89515

1.11713

.92709

1.07864

.96003

1.041.53

10

51

.86470

1.15647

.89.567

1.11643

.92763

1.07301

.96064

1.04097

9

52

.86521

1.15.579

.89620

1.11532

.92817

1.07733

.96120

1.04036

8

53

.86572

1.15511

.89672

1.11517

.92372

1.07676

.96176

1.03976

7

54

.86623

1.1.5443

.89725

1.11452

.92926

1.07613

.96232

1.0.3915

6

55

.86674

1.15375

.89777

1.11.337

.92930

1.07550

.96238

1.03355

5

56

.86725

1.15303

.89330

1.11.321

.93034

1.07437

.96:344

1.03794

4

57

.86776

1.15240

.89SS3

1.112.56

.93038

1.07425

.96400

1.03734

3

58

.36327

1.15172

.89935

1.11191

.93143

1.07362

.964.57

1.03674

2

59

.86378

1.15104

.89938

1.11126

.93197

1.07299

.96513

1.0-3613

1

60 M.

.86929

1.15037

.90040

1.11061

.93252

1.07237

.96569

1.03553

0

Cotang.

Tang.

Cotang.

Tang.

Cotang.

Tang.

Cotang.

Tang.

4

9=

4

:8 =

4

.70

463

TABLE XV. NATURAL TANGENTS AND COTANGENTS. 241

M.

(J

440 1

M.

fiO

M.

20

440

M.

40

M.

40

440

20

Tang.

Cotang.

Tang.

Cotang. 1.02355

Tang.

Cotang.

.96569

1.03553

.97700

.98843

1.01170

1

.96625

1.03493

59

21

.97756

1.02295

39

41

.98901

1.01112

19

9

.96631

1.03133

58

22

.97813

1.02236

38

42

.989.58

1.01053

18

3

.96738

1.03372

57

23

.97870

1.02176

37

43

.99016

1.00994

1/

4

.96794

1.03312

56

24

.97927

1.02117

36

44

.99073

1.00935

16

5

.96350

1.03252

55

25

.97934

1.02057

35

45

.99131

1.00376

15

fi

.96907

1.03192

54

2(5

.93041

1.01998

34

46

.99189

1.00818

14

7

.96963

1.03132

53

27

.93093

1.01939

33

47

.99247

1.00759

13

8

.97020

1.03072

52

28

.93155

1.01879

32

48

.99304

1.00701

12

9

.97076

1.03012

51

29

.93213

1.01820

31

49

.99362

1.00642

11

10

.97ia3

1.02952

50

30

.93270

1.01761

30

50

.99420

1.00583

10

11

.97189

1.02892

49

31

.98327

1.01702

29

51

.99478

1.00525

9

P

.97246

1.02832

48

32

.93334

1.01642

28

52

.99536

1.00467

8

13

.97302

1.02772

47

33

.93441

1.01533

27

53

.99594

1.00403

"i

14

.97359

1.02713

46

34

.93499

1.01524

26

54

.99652

1.00350

6

15

.974)3

1.02653

45

ai

.93556

1.01465

25

55

.99710

1.00291

b

16

.974: 2

1.02593

44

36

.93613

1.01406

24

56

,99763

1.00233

4

17

.97529

1.02533

43

37

.93671

1.01347

23

57

.99326

1.00175

3

18

.97536

1.02474

42

38

.93728

1,01283

22

58

.99884

1.00116

2

19

.97643

1.02414

41

39

.98786

1.01229

21

59

.99942

1.00058

1

20 M.

.97700

1.02355

40 M.

40 M.

.93343

1.01170

20 M.

60 M.

1.00000

1.00000

0 M.

Cotang.

Tang.

Coteing.

Tang.

Cotang.

Tang.

453

450

450

V

242 TABLE XVI. RISE PER MILE OF VARIOUS GRADES.

TABLE XVI.

RISE PER MILE OE VARIOUS GRADES.

Grade

per Htatioa.

Rise per

Mile-

Grade per

Station.

Rise per Mile.

Grade

per Station.

Rise per Mile.

Grade

per Station.

Rise per Mile.

.01

.523

.41

21.643

.81

42.763

1.21

63.838

.02

1.0.56

.42

22.176

.52

43.296

1.22

64.416

.03

1.5S4

.43

22.701

.83

43..y2l

1.23

64.944

.04

2.112

.44

23.2.32

..S4

44.3.52

1.24

65.472

.05

2.640

.45

23.760

.85

44.850

1.25

66.000

.06

3.163

.46

24.233

.86

45.403

1.26

66.523 ,

.07

3.6S6

.47

24.816

.37

45.936

1.27

67.056

.OS

4.224

.43

2-5.344

.83

46.464

1.23

67.534

.09

4.752

.49

25.872

.89

46.992

1.29

63.112

.10

5.280

.50

26.400

.90

47.520

1.30

65.640

.11

5.803

.51

26.923

.91

48.043

1.31

69.163

.12

6.3.36

.52

27.4-56

.92

43.576

1.32

69.696

.1.3

6.S64

.53

27.934

.93

49.104

1.33

70.224

.14

7.392

.54

23.512

.94

49.632

1.34

70.752

.15

7.920

.55

29.040

.95

5OI60

1.35

71.230

.16

8.443

.56

29.563

.96

50.683

1.36

71.808

.17

8.976

.57

30096

.97

51.216

1.37

72.336

.13

9.504

.53

30.624

.93

51.744

1.33

72.S64

.19

10.032

.59

31.152

.99

52.272

1.39

73.392

.20

10. .560

.60

31.6S0

1.00

52.800

1.40

73.920

.21

11.083

.61

32.203

l.ni

53.323

1.41

74.443

.22

11.616

.62

32.738

IM

53.8.56

1.42

74.976

.23

12.144

.63

33.264

1.03

54.354

1.43

75.. 504

.24

12.672

.64

33.792

1.04

54.912

1.44

76.0.32

.25

13.200

.65

34.320

1.05

55.440

1.45

76.560

.26

13.723

.66

34.S43

1.06

55.963

1.46

77.038

.27

14.2.56

.67

35.376

1.07

56.496

1.47

77.616

.23

14.784

.63

35.904

1.03

57.024

1.43

78.144

.29

15.312

.69

36.432

1.09

57.552

1.49

78.672

.30

15.840

.70

36.960

1.10

53.030

1.50

79.200

.31

16.363

.71

37.483

l.Il

53.608

1.51

79.723

.32

16.896

.72

33.016

1.12

59.1.36

1.52

80.2.56

.33

17.424

.73

33.544

1.13

59.664

1.53

80.784

.34

17.952

.74

39.072

1.14

60192

1.54

81.312

.3.5

18.450

.75

39.600

1.15

60.720

1.55

81.840

.36

19.003

.76

40123

1.16

61.243

1.56

82.363

.37

19.536

.77

40.656

1.17

61.776

1.57

82.896

.33

20.0&4

.78

41.184

1.18

62.304

1.58

83.424

.39

20.592

.79

41.712

1.19

62.832

1.59

a3.952

.40

21.120

.80

42.240

1.20

63.360

1.60

&i.480

TABLE XVI. RISE PER MILE OF VARIOUS GRADES. 243

Grade

Rise per

Grade

Rise per

Grade

Rise per

Grade

Rise per

per Station.

Mile.

per Station.

Mile.

per Station.

Mile.

per Station.

Mile.

1.61

S5.003

1.81

95.563

2.10

110.880

4.10

2I6.4S0

1.62

65.536

1.82

96.096

2.20

116.160

4.20

221.760

1.63

86.064

1.S3

96.624

2.30

121.440

4.30

227.040

1.64

86.592

1.84

97.152

2.40

126.720

4.40

232.320

1.6.5

87.120

1.85

97.630

2.50

132.000

4.50

237.600

1.66

87.643

1.86

98.208

2.60

137.280

4.60

242.880

1.67

88.176

1.87

93.736

2.70

142.560

4.70

243.160

1.63

88.704

I.S8

99.264

2.80

147.840

4.80

253.440

1.69

89.232

1.89

99.792

2.90

153.120

4.90

253.720

1.70

89.760

1.90

100.320

3.00

153.400

5.00

264.000

1.71

90.233

1.91

100.843

3.10

163.680

5.10

269.230

1.72

90.816

1.92

101.376

3.20

163.960

5.20

274.560

1.73

91.344

1.93

101.904

3.30

174.240

5.30

279.840

1.74

91.872

1.94

102.432

3.40

179.520

5.40

235.120

1.75

92.400

1.95

102.960

3 50

184.800

5.50

290.400

1.76

92.923

1.96

103.483

3.60

190.080

5.60

295.630

1.77

93.456

1.97

104.016

3.70

195.360

5.70

300.960

1.73

93.934

1.93

104.544

3.80

200.640

5.80

306.240

1.79

94.512

1.99

105.072

3.90

205.920

5.90

311.520

l.SO

95.040

2.00

105.600

4.00

211.200

6.00

316.800

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