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A right triangle only has two legs, the third side is called the hypotenuse . The square of the length of the hypotenuse is equal to the sum of the squares of the two legs. The square root of the difference of the square of the hypotenuse and the square of one leg is equal to the length of the other leg.

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Q: How do you determine the length of the 3rd leg in a right triangle if you have the length of the other two legs?
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