Wentworth, G. A. (George Albert), 1835-1906 · Boston, Ginn & company · leaf 53
In either figure, - = sin A. In Fig. 53,In Fig. 54, - = sin B.a = sin(180°-5)=sm5. Therefore, whether h lies within or without the triangle, weobtain, by division, l = ~ [25] b sinB L J 64 THE OBLIQUE TRIANGLE 65 By drawing perpendiculars from the vertices A and B tothe opposite sides, we may…
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