New plane and spherical trigonometry, surveying, and navigation (1903)
Wentworth, G. A. (George Albert), 1835-1906 · Boston : Ginn & Company · leaf 150
colog sin ffi° 30 21 = 0.03758 \ogAB = 2.53842 ^15 = 345.48.Distance ^1£, 345.48 feet. 59. To compute the horizontaldistance between two inaccessiblepoints A and J5, when no point canbe found whence both can be seen.Take two points C and D, distant200 yards, so that A can be seenfrom C, and B from… … AC=CF sin (LI 2^ = 200 sin 83° sin 42° 29 log 200 = 2.30103 log sin 83° = 9.99675 colog sin 42° 29 = 0.17045 log AC = 2.46823 AC = 293.92. , sin BED BD = DE = 200 sin DM? sin 88° 30 sin 37° log 200 = 2.30103 log sin 88° 30= 9.99985 colog sin 37° = 0.22054 log BD = 2.52142 BD = 332.22. t2mi(ADC-CAD)…
Trigonometry · Surveying · Navigation
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