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March 26, 2017

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solve the triangle a=1 b=2 C=50 degrees

  • algrebra 2 / trig - ,

    guessing that you are describing a triangle ABC , use the cosine law

    c^2 = a^2 + b^2 - 2(a)(b)cosC
    = 1 + 4 - 2(1)(2)cos50
    = 2.42885
    c = 1.5585

    Now use the sine law to find a second angle.
    The use the angle sum of a triangle to find the third angle.

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