Quote:
Originally Posted by yellowjellybean
Oh I see, if we assume it's a right triangle, the 100 would be the hypotenuse. But I don't understand from where in the question, we can just assume that.
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We know the angle for the unknown is 30 so that can't be the hypotenuse. That leaves 87 and 100 and the longest side is always the hypotenuse in a right triangle because it is produced by the largest possible angle, 90.