Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes and company · leaf 204
The angle C = 180° — {A + B) = 57° 34 To find the distance BC. As sin C 57° 34 ar. comp. 0.073649 i sin A 57° 35 ... 9.926431 : : AB GOO .... 2.778151 BC 600.11 yards.To find the distance AC, 2.778231 As sin 0 57° 34 ar. comp. 0.073649 siD B 64° 51 ... 9.956744 ; : AB 600 . ; 2.778151 AC 043.94… … PROBLEM II. To determine the altitude of an inaccessible object above a given horizontal plane. FIRST METHOD Suppose D to bo the inaccessibleobject, and BC the horizontal planefrom which the altitude is to beestimated: then, if we suppose DCto be a vertical line, it will repre-sent the required…
Geometry · Plane trigonometry
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