cute, the third angle oppofite to the quadrant is cbtufe. (XCjj^. Here note^that when a comphment in the Propofittons doth chance to con- curre with a complement, in the circular parts , you mufl take the fine it felfei or the tangent itfelfe; be- caufe the cofine of the cofirse is the fine, and… … . <is4s the tangent of I G, equal to AC,Is to Radius I E ; So is the tangent of F H, equal to CB ?To the fine of FE the comp.ofp l,equalto A C B. ■Therefore* As the tangent of A C,\Is to Radius ABC j So is the tangent of Q B,To the cofine of A C B. A ,-. ^ t U^f^e S j4s f^e ^a<^itis A B C, ~)…
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