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28 February, 20:23

There are two possible triangles with the measures given for triangle ABC. b = 20.2, c = 18.3, C = 38°

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  1. 28 February, 20:40
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    Ok

    First use the sine rule to find one value

    b / sin B = c / sin C

    20.2 / sin B = 18.3 / sin 38

    sinB = 20.2 * sin 38 / 18.3 = 0.6796

    m < B = 42.8 degrees

    the other possible measure is 180 - 42.8 = 137.2 degrees
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