New plane and spherical trigonometry, surveying, and navigation (1903)
Wentworth, G. A. (George Albert), 1835-1906 · Boston : Ginn & Company · leaf 298
Then VS = v, VB = r, SR = d, RVS = e. Then in the right triangle RVS,by [39], sin SB = sinVS x sinBVS,or sin d = sin v sin e. Also, by [40], cos BVS = tan BV cot VS,or cos e = tan r cot v. .-. tan r = tan v cos e. 29. Given e = 23° 27, the lati-tude of a star 51°, its longitude315°; find its… … Here VT = 315°,TM = 51°,BVT= 23° 27;to find VB = r,and BM = d. In the right triangle VTM,By [38], cos VM = cos VT cos TM,By [42], tan MVT = tan Jf T esc VT. log cos FT= 9.84949log cos T3f= 9/79887log cos IOf= 9.64836 VM = 63° 34 36.log tan TM= 10.09163log esc VT = 0.15051 (n)log tan MVT = 10.24214…
Trigonometry · Surveying · Navigation
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