Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes and company · leaf 210
und that CB — 612 yardsCA = 588 yardsACB = 55° 40;required the distance AB. Ans. 592.907 yards. 3. Being on a horizontal plane, and wanting to ascertainthe height of a tower, standing on the top of an inaccessiblebill, there were measured, the angle of elevation of the topof the hill 40°, and of… … 210 TRIGONOMETRY, Application 4. Wanting to know the horizon-tal distance between two inaccessi-ble objects E and Wy the followingmeasurements were made, f AB = 536 yardsBAW — 40° 16WAE = 57° 40ABE = 42° 22EBW= 71° 07required the distance EW.
Geometry · Plane trigonometry
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