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16 September, 20:04

Solve the triangle B=71 degrees, b=15, c=8

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  1. 16 September, 23:07
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    SinC/8=sin71/15

    sinC=8sin71/15

    C=arcsin (8sin71/15) ≈30.28°

    A=180-71-arcsin (8sin71/15) ≈78.72

    a/sin78.72=15/sin71

    a=15sin78.72/sin71≈15.56

    So the angles and their opposite side lengths are:

    A=78.72°, B=71, C=30.28°

    a≈15.56, b=15, c=8
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