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Math Help - Trig Problem from my Pre-Calc Homework

  1. #1
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    Question Trig Problem from my Pre-Calc Homework

    Trig Problem from my Pre-Calc Homework-abc.jpg

    Let ABC be a triangle with standard notation. Suppose a = 5, b = 6, and C = 26˚. Evaluate the remaining sides and/or angles of the triangle, namely A, B, and c. Perform exact calculations and round only final answers.

    Round the answers to four decimal places.

    Homework question. My last one for the week. Thanks =)
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  2. #2
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    Re: Trig Problem from my Pre-Calc Homework

    start with the law of cosines to get side c, then then the law of sines to get either angle A or B ... then you can find angle C
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    Re: Trig Problem from my Pre-Calc Homework

    I got c, and plugged the numbers into the law of sin for A:

    [sin(A)/5]=[sin(26)/2.6593]
    getting the answer: 55.5095

    Yet the answer apparently isn't right
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  4. #4
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    Re: Trig Problem from my Pre-Calc Homework

    Quote Originally Posted by jonathanraxa View Post
    I got c, and plugged the numbers into the law of sin for A:

    [sin(A)/5]=[sin(26)/2.6593]
    getting the answer: 55.5095

    Yet the answer apparently isn't right
    don't round until the very last ... I get angle A = 55.5069
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