Wentworth, G. A. (George Albert), 1835-1906 · Boston, Ginn & company · leaf 55
Fig. 55 2R = c sin A sin B sin C That is : The ratio of any side of a triangle to the sine ofthe opposite angle is numerically equal to the diameter of thecircumscribed circle. 66 PLANE TRIGONOMETRY SECTION XXXV LAW OF COSINES This law gives the value of one side of a triangle in termsof the other…
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