## The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art |

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Page 273

99.5 :: Radius S. 90 deg :

99.5 :: Radius S. 90 deg :

**Tang**. Bear . 61 ° 151 : Distance 113.49 IN runs N. 61 ° 15 ' E. Answer , NI runs S. 61 15 W. ) } 113.5 113.5 per . Page 10

EXAMPLES O Required the log . sine of 36 32 co - sine of 61 18 tangent of 54 17 co -

EXAMPLES O Required the log . sine of 36 32 co - sine of 61 18 tangent of 54 17 co -

**tang**. of 42 50 secant of co - secant of 70 33 sine of 108 36 or sine ... Page 16

Co - sine

Co - sine

**Tang**: Co -**tang**. Secant Co - sec O 000000 10.000000 0.000000 Ipfinite . 10.000ooo Infinite . 60 6.46372610.000000 6.463726 13.536274 10.000000 ... Page 1

**Tang**. Co -**tang**1 Secant . Co - sec . 8.2418559-999934 8.241921 11.758079 10.00006619.758145 ) 60 18.2490339-999932 8.249102 ' 11.750898 10.000068 ... Page 2

**Tang**Co -**tang**. Secant Co - sec . 08.542819 9.999735 8.54308411.45691610 090265 11.457181 60 8.546422 9.9997318.546691 11.453309110.000269 | 11.453578 59 2 ...### What people are saying - Write a review

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### Common terms and phrases

acres altitude angle Answer arch base bearing called centre chains chord circle Co-sec Co-sine Co-tang column compasses contained decimal degrees Dep Lat difference direct Dist distance divided divisions draw drawn east edge equal EXAMPLE extended feet figures fixed four fourth give given glass greater ground half hand height Horizon inches laid land Lat Dep latitude length less logarithm manner marked measure meridian method minutes multiplied natural object observed opposite parallel perches perpendicular plane pole PROB proportion Quadrant quotient radius reduce remainder right angles right line root rule scale Secant sect side sights sine square station Sun's suppose survey taken Tang tangent theo third triangle true whole

### Popular passages

Page 40 - 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 27 - 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 201 - RULE. From half the sum of the three sides subtract each side severally.

Page 2 - Then multiply the second and third terms together, and divide the product by the first term: the quotient will be the fourth term, or answer.

Page 108 - 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 2 - ... then multiply the second and third terms together, and divide the product by the first term, and the quotient will be the answer ; — in the same denomination with the third term.

Page 29 - 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.