A Treatise on Surveying,: Containing the Theory and Practice: : to which is Prefixed a Perspicuous System of Plane Trigonometry. : The Whole Clearly Demonstrated and Illustrated by a Large Number of Appropriate Examples. : Particularly Adapted to the Use of SchoolsKimber and Sharpless, no. 93, Market Street, and John Richardson, no. 244, Market Street., 1820 - 206 páginas |
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Página 45
... scale of equal parts , and draw AC , making the angle A = 32 ° 15 ′ ; also make the angle B = 114 ° 24 ' and produce BC , AC , till they meet in C , then is ABC the triangle required ; and AC , measured by the same scale of equal parts ...
... scale of equal parts , and draw AC , making the angle A = 32 ° 15 ′ ; also make the angle B = 114 ° 24 ' and produce BC , AC , till they meet in C , then is ABC the triangle required ; and AC , measured by the same scale of equal parts ...
Página 46
... Scale . Extend the compasses , on the line of sines , from . 33 ° 21 ' to 65 ° 36 the supplement of the angle B ; that . extent will reach , on the line of numbers , from 98 to 162 , the side AC . Extend the compasses from 33 ° 21 ' to ...
... Scale . Extend the compasses , on the line of sines , from . 33 ° 21 ' to 65 ° 36 the supplement of the angle B ; that . extent will reach , on the line of numbers , from 98 to 162 , the side AC . Extend the compasses from 33 ° 21 ' to ...
Página 47
... scale of equal parts , and from C draw CB perpendicular to AB , then ABC is the triangle required . AB , measured by the same scale of equal parts , will be 288 , and BC will be 384 . By Calculation . As sine of B 90 ° Is to sine of A ...
... scale of equal parts , and from C draw CB perpendicular to AB , then ABC is the triangle required . AB , measured by the same scale of equal parts , will be 288 , and BC will be 384 . By Calculation . As sine of B 90 ° Is to sine of A ...
Página 48
... Scale . Extend the compasses , on the line of sines , from 90 * to 53 ° 8 ' , that extent will reach , on the line of numbers , from 480 to 384 the perpendicular BC . Extend the compasses , on the line of sines , from 90 ° to 36 ° 52 ...
... Scale . Extend the compasses , on the line of sines , from 90 * to 53 ° 8 ' , that extent will reach , on the line of numbers , from 480 to 384 the perpendicular BC . Extend the compasses , on the line of sines , from 90 ° to 36 ° 52 ...
Página 49
... scale of equal parts , and draw CA , making the angle C = 33 ° 21 ' ; with the side . AB.98 , in the compasses , taken from the same scale of equal parts , and B as a centre , describe the arc ab , cutting AC in the point A , and join ...
... scale of equal parts , and draw CA , making the angle C = 33 ° 21 ' ; with the side . AB.98 , in the compasses , taken from the same scale of equal parts , and B as a centre , describe the arc ab , cutting AC in the point A , and join ...
Términos y frases comunes
ABCD ABFD acres adjacent adjacent angles angle ABC angle opposite angled triangle base bearing and distance breadth Calculation centre Co-secant Secant Co-sine Co-tang column cube root decimal DEMONSTRATION departure corresponding diff difference of latitude Dist divide division line draw equal EXAMPLES feet figures find the angle find the area four-pole chains fourth term given angle given area given bearing given number given ratio given side John Gummere Lat Dep latitude and departure length logarithm M.
M. Sine measured meridian distance natural number off-sets parallel parallelogram perches perpendicular quired quotient radius rectangle remainder Required the area right angle right line right-angled triangle RULE semiperimeter side AB side AC square root station stationary line subtract survey tance Tang tangent tract of land trapezium trapezoid triangle ABC trigonometry