Beale, Oscar James, Brown & Sharpe Manufacturing Company (Providence, R.I.) · Providence, R.I. : Brown & Sharpe Mfg. Co. · leaf 100
is equal to the cosine C E. In any right-angle triangle, the side adjacent eitheracute angle corresponds to the cosine when thehypothenuse is the radius of the arc that measuresthe angle; hence: Divide the side adjacent the acuteangle by the hypothenuse., and the quotient will be thicosine of the… … 82 BROWN & SHARPE MFG. CO. Let a cylinder, 2 diameter, Fig. 36, be cut six-sided;what is the diameter across the sides ? The angle A O B, at the center, occupied by one ofthese sides, is one-sixth of the circle, =60°. Thecosine of one-half this angle, 30°, is the line C O;twice this line is the…
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