Beale, Oscar James, Brown & Sharpe Manufacturing Company (Providence, R.I.) · Providence, R.I. : Brown & Sharpe Mfg. Co. · leaf 93
we call the lineO A the side adjacent. AVhen we are speaking of the ^^^^ adjacent.angle A B O we call the line A B the side adjacent.The line opposite the right angle is the hypothenuse. Hypothenuse. 74 Tangent. BROWN & SHARPE MFG. CO. The Tangent of an arc is the Hue that touches it atone… … Fis. 30 Thus, in Fig. 30, the line A B is the tangent of the arcA C. The point of tangency is at A. An angle at the center of a circle is measured by thearc intercepted by the sides of the angle. Hence thetangent A B of the arc A C is also the tangent of theangle A O B. In the tables of circular…
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