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With a right triangle you can use the Pythagorean formula. a^2 + b^2 = c^2

We will call the hypotenuse c and the leg a

15^2 + b^2 = 39^2 ( rearrange )

b = sqrt of 39^2 - 15^2

= 36

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Q: A right triangle has a hypotenus eof the length 39 and a leg of length 15 What is is the leangth of the other leg?
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