The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art |
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Page 273
... Tang . Bear . 61 ° 15 ' Answer , { IN runs N. 61 ° 15 ' E. NI runs S. 61 15 W. 118.5 per . In the part IABCI , the difference between the northings and the southings of the three lines , IA , AB and BC ( 109.1 ) is the difference of ...
... Tang . Bear . 61 ° 15 ' Answer , { IN runs N. 61 ° 15 ' E. NI runs S. 61 15 W. 118.5 per . In the part IABCI , the difference between the northings and the southings of the three lines , IA , AB and BC ( 109.1 ) is the difference of ...
Page 20
... tang . of 42 50 10 052877 secant of 19 27 co - secant of 70 33 10.025519 10.0255 19 sine of 108 36 or sine of 71 24 · 9.976702 or co - sine of 18 36 To find the Degrees and Minutes nearest corresponding to a given Loge , rithmic Sine ...
... tang . of 42 50 10 052877 secant of 19 27 co - secant of 70 33 10.025519 10.0255 19 sine of 108 36 or sine of 71 24 · 9.976702 or co - sine of 18 36 To find the Degrees and Minutes nearest corresponding to a given Loge , rithmic Sine ...
Page 25
... 8.541878.542480 60 " 50 " 40 " 30 " 20 " Co - tangent 88 Degrees , D 32 33 34 35 3333w ww 36 37 38 39 40 44 45 46 47 48 49 50 51 52 55 56 78 57 58 59 98765432 I 104 M 0 Degree . M Sine . Co - sine Tang LOGARITHMIC TANGENTS . 25.
... 8.541878.542480 60 " 50 " 40 " 30 " 20 " Co - tangent 88 Degrees , D 32 33 34 35 3333w ww 36 37 38 39 40 44 45 46 47 48 49 50 51 52 55 56 78 57 58 59 98765432 I 104 M 0 Degree . M Sine . Co - sine Tang LOGARITHMIC TANGENTS . 25.
Page 26
... ) 60 8.241855 9.999934 8.241922 11.75807810.000066 11.758145 ) Co - sine Sine Co tăng Tang . Co - sec . Secant 89 Degrees . 59 M 9 8 7 5 3 2 I ΟΙ 1 Degree . M Sine . Co - sine . 26 LOGARITHMIC SINES , TANGENTS , AND SECANTS .
... ) 60 8.241855 9.999934 8.241922 11.75807810.000066 11.758145 ) Co - sine Sine Co tăng Tang . Co - sec . Secant 89 Degrees . 59 M 9 8 7 5 3 2 I ΟΙ 1 Degree . M Sine . Co - sine . 26 LOGARITHMIC SINES , TANGENTS , AND SECANTS .
Page 27
... tang Secant . Co - sec . K 08.241855 9.999934 8.241921 11.758079 10.000066 11.758145 60 18.249033 9.999932 8.249102 ... tang . Tang . Co - sec , Secant . M 88 Degrees 9876 4 5436 2 2 Degrees . M Sine . Co - sine . LOGARITHMIC SINES ...
... tang Secant . Co - sec . K 08.241855 9.999934 8.241921 11.758079 10.000066 11.758145 60 18.249033 9.999932 8.249102 ... tang . Tang . Co - sec , Secant . M 88 Degrees 9876 4 5436 2 2 Degrees . M Sine . Co - sine . LOGARITHMIC SINES ...
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Common terms and phrases
acres altitude Answer arch azimuth base bearing blank line centre chains and links chord circle circumferentor Co-sec Co-tang column compasses contained decimal difference distance line divided divisions draw east Ecliptic edge feet field-book figures fore four-pole chains geom given number half the sum Horizon glass hypothenuse inches instrument Lat Dep Lat latitude length logarithm measure meridian distance multiplied natural co-sine natural sine needle Nonius number of degrees object observed off-sets opposite parallel parallelogram pegs perches perpendicular plane pole pole star Portmarnock PROB protractor Quadrant quotient radius right angles right line scale of equal SCHOLIUM screw Secant sect Sextant side sights square station stationary distance subtract Sun's survey taken Tang tangent theo theodolite trapezium triangle ABC trigonometry two-pole chains vane versed sine vulgar fraction whence
Popular passages
Page 38 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Page 25 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c.
Page 197 - RULE. From half the sum of the three sides subtract each side severally.
Page 106 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Page 27 - The VERSED SINE of an arc is that part of the diameter which is between the sine and the arc. Thus BA is the versed sine of the arc AG.