Kelvin, William Thomson, Baron, 1824-1907, Darwin, George Howard, Sir, 1845-1912, Tait, Peter Guthrie, 1831-1901 · Cambridge [Eng.] : University Press · leaf 103
r w : O :: QP : NP.Let a be the semivertical angle of the fixed, /3 of the rolling,cone. Each of these may be supposed for simplicity to be acute, and their sum or difference less than a right ande though, of course, the formulas so obtained are (like alltrigonometrical results) applicable to every… … w sin ft = d sin (a + ft),where AOI = a, 10 B = ft. Let ft be negative, and let /3 - - (3 ;then /? is positive, and we have— W sin ft - Q, sin (a - ft),where A0I = a, £01= ft. In the preceding let ft > a.It may then be convenientlywritten w sin ft = Q sin (ft - a),where A0I=a, £01= ft,a and ft…
Calculators · Mechanics, Analytic · Tides
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