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Math Help - paralleogram diagnols

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    paralleogram diagnols

    A parallelogram has diagonals of lengths 12 and 15 inches that intersect at an angle of 63.7 degrees. How long are the sides of the parallelogram?
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    Quote Originally Posted by victorfk06 View Post
    A parallelogram has diagonals of lengths 12 and 15 inches that intersect at an angle of 63.7 degrees. How long are the sides of the parallelogram?
    The diagonals split the parallelogram into 4 triangles. You can use the Law of Cosines to find the length of one of the unknown sides from one triangle and use the adjacent triangle to find the length of the other side.

    -Dan
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