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Math Help - Solve a Triangle

  1. #1
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    Solve a Triangle

    Please Solve the triangle ABC when

    a = 7.5

    b = 12,

    and A = 35 degrees

    Thank You, I don't know what to do.
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  2. #2
    Behold, the power of SARDINES!
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    Re: Solve a Triangle

    Quote Originally Posted by dazedandmathfused View Post
    Please Solve the triangle ABC when

    a = 7.5

    b = 12,

    and A = 35 degrees

    Thank You, I don't know what to do.

    First you need to DRAW a triangle with angle A across from side A.

    Now use the Law of sines to find the missing sides of the triagnle.

    Law of sines - Wikipedia, the free encyclopedia
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  3. #3
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    Re: Solve a Triangle

    Quote Originally Posted by TheEmptySet View Post
    First you need to DRAW a triangle with angle A across from side A.

    Now use the Law of sines to find the missing sides of the triagnle.

    Law of sines - Wikipedia, the free encyclopedia
    Thats all? .
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  4. #4
    Behold, the power of SARDINES!
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    Re: Solve a Triangle

    Quote Originally Posted by dazedandmathfused View Post
    Thats all? .
    I do not understand your question. Did you use the law of sines. If so that is all. Did you look at the example in the link. They do an almost identical problem.
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  5. #5
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    e^(i*pi)'s Avatar
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    Re: Solve a Triangle

    Quote Originally Posted by dazedandmathfused View Post
    Please Solve the triangle ABC when

    a = 7.5

    b = 12,

    and A = 35 degrees

    Thank You, I don't know what to do.
    I don't know what you mean by "Solve the triangle" but I'm guessing you need to find the missing sides and angles?

    1. Use the sine law to find angle B
    2. Find angle C (hint: all angles in a triangle add up to 180 degrees)
    3. Use the sine law again to find side c


    Note the convention that sides a, b and c are opposite to angles A, B and C respectively
    Last edited by e^(i*pi); November 8th 2011 at 09:17 AM. Reason: tag fix
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