New plane and spherical trigonometry, surveying, and navigation (1903)
Wentworth, G. A. (George Albert), 1835-1906 · Boston : Ginn & Company · leaf 144
EDITION. 135 p — b sin A = c sin B sin A sin C „, r sin 36° 4 sin 44° 50 = /GO sin 99° log 700 = 2.84510 log sin 36° 4 = 9.76991 log sin 44° 56= 9.84898 colog sin 99° = 0.00538 logp = 2.46937 p = 294.69. Height of cloud, 294.69 feet. 46. From a point B at the footof a mountain, the angle of… … CD = CB sin CBD= 5280 x i = 2640.CB sin CB Asin CABAE = AC sin EC A _ CB sin CBA sin EC Asin CAB5280 sin 30° sin 75° sin 15° 5280 xicosl5° sin 15°= 2640 cot 15°. log 2640= 3.42160 log cot 15° = 10.57195 \ogAE = 3.99355 AE = 9852.6.AF= AE + CI)= 12,492.6.Height of the mountain, 12.492.6feet. 47.…
Trigonometry · Surveying · Navigation
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