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Math Help - [SOLVED] law of sines

  1. #1
    jrice528
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    [SOLVED] law of sines

    Have 2 questions about how to use the law of sines! doing study/homework for class.

    1.Find B given that: A= 38 degrees, a = 31, c =24


    2. Find C given A=57 degrees, b = 32 and c = 26
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  2. #2
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by jrice528 View Post
    1.Find B given that: A= 38 degrees, a = 31, c =24
    Use A, a, and c to calculate angle C. Then you know that A + B + C = 360 degrees.

    Quote Originally Posted by jrice528 View Post
    2. Find C given A=57 degrees, b = 32 and c = 26
    I don't think it can be done using just the Law of Sines. I'd use the Law of Cosines to find a. Then you can use A, a, and c to find C using the Law of Sines.

    -Dan
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