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20 July, 18:11

Find the measure of each angle of triangle abc, given ac=6, cb = 2 square roots of 3, and ab = 4 square roots of 3

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  1. 20 July, 21:16
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    Note that

    (4sqrt3) ^2 = (2sqrt3) ^2 + 6^2 [ 48 = 12 + 36] so the triangle is a right angled one with hypotenuse AB

    So angle C = 90 degrees

    sin A = 2 sqrt3 / 4 sqrt3 = 1.2 giving A = 30 degrees

    and B = 90 - 30 = 60 degrees

    A = 30, B = 60 and C = 90 degrees
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