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Thread: Solve this triangle?

  1. July 25th 2010, 10:09 AM #1
    seggo
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    Solve this triangle?

    Triangle ABC has an area of 30cm^2, AC = 9 cm, and BC = 7 cm. Calculate the measure of angle C and the largest possible length of AB.
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  2. July 25th 2010, 10:40 AM #2
    skeeter
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    Quote Originally Posted by seggo View Post
    Triangle ABC has an area of 30cm^2, AC = 9 cm, and BC = 7 cm. Calculate the measure of angle C and the largest possible length of AB.
    use the equation Area = \frac{1}{2}ab \sin{C} , solve for sin{C}

    AB (side c) will have the greatest value when angle C is obtuse.
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