Nystrom, John W. (John William), 1824-1885 · Philadelphia, J.B. Lippincott · leaf 153
courses on the surfaceof the earth; positions and motions of the heavenly bodies, &c, &c. Exampleswill be furnished in Geography and Astronomy. Example1. Fig. 140 In a right-angled spherical triangle the side or hypothe-nuse a = 36° 2C, the angle B = 68° 50. How long is the side 5 = 1… … sm.a: sin.i = sin. J. : sin.I>,sin.6 : sin.c = sin.5 : sin.C, sm.a ■■ sin.b-. sin.fl sin.Asin.£ sin.c sin.J9 sin. 0 Un.(a+b) = tan.|c cos.^^% - , . ,x , sin.^M—-I?) v y sin.i(A + 2?) tan.4(^) = cot.UC^f^,tan.M^-^) = cot.U^§=^, cot.U = ton.i(£ - C) tnw(/+C)> ■* ^v J sm.i{£> — c) . , . ,,…
Mechanical engineering · Engineering
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