New plane and spherical trigonometry, surveying, and navigation (1903)
Wentworth, G. A. (George Albert), 1835-1906 · Boston : Ginn & Company · leaf 359
=2.12931 \d = 135 = 2° 15 E.V = 4° 25 W. Exercise VIII. Page 374. 1. Find the elements (initial courses, distance, and latitude and longi-tude of the vertex) of the great circle track between the Lizard, in latitude49° 58 N., longitude 5° 12 W., and the Bermuda Islands, in latitude 32°18 N.,… … To find the initial courses : tan£(C+ C) tan£(C- C) — cos j (c — c)cos i (c + c) — sin ^ (c — c)~ sin i (c -f- c) cot i \d-cot i Xd. teachers edition. 351 ±(c-c)= 8° 50,$ (c + c) = 48° 52, }Xd =29° 48, log cos = 9.99482cologcos = 0.18190log cot = 10.24178 log tan i (C + C) = 10.41850i(C + G) = 69°…
Trigonometry · Surveying · Navigation
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