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26 September, 21:04

rhombus has sides of length 10 cm. and the angle between two adjacent sides is 76 degrees. Find the lengths of the other diagonal.

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  1. 26 September, 21:27
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    Let the length of one of the diagonals be 2x and the other be 2y, then

    cos (76/2) = x/10

    x = 10 cos 38 = 7.88 cm

    sin (76/2) = y/10

    y = 10 sin 38 = 6.16 cm
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