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4 February, 15:39

In ∆ABC, m∠A = 60º, m∠C = 30º, and AB = 6 inches. What is the length of side BC?

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  1. 4 February, 15:47
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    ABC is a 30 60 90 triangle

    In such a triangle, the shortest side AB multiplied by the square root of 3 equals the length of the "medium" side CB.

    6 * sq root (3) = 10.39

    (Incidentally, the hypotenuse AC = short side*2 = 12)
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