New plane and spherical trigonometry, surveying, and navigation (1903)
Wentworth, G. A. (George Albert), 1835-1906 · Boston : Ginn & Company · leaf 300
os i (I + p + h) sin £ (I + P — h) esc p sec I.Here I = 51° 31 48, h = 35° 14 27,p = 90° - 21° 27 = 68° 33. teachers edition. 291 *(l+p+ *) = 77° S^ 87.fi. i(l+p -ft) = 42° 2510.5. log cos | (I + p + ft) = 9.32982 log sin i (I + p - ft) = 9.82901 log csc p = 0.03117 log sec I = 0.20614 logsinHt=… … Altitude = ZJf= 90°-ft.Co-latitude = PZ = 90° - IPolar distance == PJf = 90°Azimuth = PZM = a.cosiA d = p. By [47], cos i A = Vsin s sin (s — a) esc b esc c. Let A = PZM or a,« = p,6 = 90° - A,c = 90° - I.Then sins = sin[90° -i(l + h-p)] = cos £(Z + ft — p).sin (s - a) = sin [90° - £ (Z + ft + p)]=…
Trigonometry · Surveying · Navigation
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