Elements of Surveying: With a Description of the Instruments and the Necessary Tables, Including a Table of Natural Sines |
From inside the book
Results 1-5 of 43
Page 35
... tangent of an arc is the line which touches it at one extremity , and is limited by a line drawn through the other extremity and the centre of the circle . Thus , AC is the tangent of the arc AB . 47. The secant of an arc is the line ...
... tangent of an arc is the line which touches it at one extremity , and is limited by a line drawn through the other extremity and the centre of the circle . Thus , AC is the tangent of the arc AB . 47. The secant of an arc is the line ...
Page 36
... tangent of EB , is called the cotangent of AB ; IB , the sine of EB , is equal to the cosine of AB ; OT , the secant of EB , is called the cosecant of AB . In general , if A is any arc or angle , we have , cos . A sin ( 900— A ) cot A ...
... tangent of EB , is called the cotangent of AB ; IB , the sine of EB , is equal to the cosine of AB ; OT , the secant of EB , is called the cosecant of AB . In general , if A is any arc or angle , we have , cos . A sin ( 900— A ) cot A ...
Page 37
... tangent , ør cotangent of any given arc or angle . 52. If the angle is less than 45o , look for the degrees in the first horizontal line of the different pages : then descend along the column of minutes , on the left of the page , till ...
... tangent , ør cotangent of any given arc or angle . 52. If the angle is less than 45o , look for the degrees in the first horizontal line of the different pages : then descend along the column of minutes , on the left of the page , till ...
Page 38
... tangent or cotangent of the remainder . The column of the table next to the column of sines , and on the right of it ... tangents and cotangents . The column D , between the columns tangents and cotangents , answers to both of ...
... tangent or cotangent of the remainder . The column of the table next to the column of sines , and on the right of it ... tangents and cotangents . The column D , between the columns tangents and cotangents , answers to both of ...
Page 39
... tangent of 37 ° 28 ′ 31 ′′ 3. Find the cotangent of 87 ° 57 ' 59 " 5.20 9.999105 Ans . 9.884592 . Ans . 8.550356 . CASE II . To find the degrees , minutes and seconds , answering to any given logarithmic sine , cosine , tangent or ...
... tangent of 37 ° 28 ′ 31 ′′ 3. Find the cotangent of 87 ° 57 ' 59 " 5.20 9.999105 Ans . 9.884592 . Ans . 8.550356 . CASE II . To find the degrees , minutes and seconds , answering to any given logarithmic sine , cosine , tangent or ...
Other editions - View all
Common terms and phrases
adjusted angle of elevation axis azimuth back-sights base line called centre clamp-screw coincide column comp compass Cosine D Cosine Sine Cotang course curve degrees determined difference of level direction divided double meridian distance draw east elongation error example feet field notes figure given angle given line given point ground Gunter's chain hence horizontal angle horizontal distance horizontal plane hypothenuse inches instrument intersection LatDegDegDegDeg Distance latitude and departure length levelling screws line AC line of collimation logarithm M.
M. Sine marked measure method multiplied natural sines needle object paper parallel passing perpendicular plane of reference protractor radius right angles right-angled triangle rods scale of equal secant side sights similar triangles Sine Sine spider's lines square chains staff subtract surface survey Tang tangent theodolite true meridian vernier plate vertical limb yards