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Math Help - two ways to find hypotenuse

  1. #1
    kat
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    two ways to find hypotenuse

    I was trying to figure out the length of the hypotenuse of a right triangle with the other sides measuring 30 and 40. The problem wanted two ways to find the length of the hypotenuse, but the only way I could think of was the Pythagorean theorem. What is a second way? Thanks!
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  2. #2
    Master Of Puppets
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    You can use trigonometry in two steps. First find an angle using those 2 lengths. Ten use that angle with one of the lengths to find the longest side.
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  3. #3
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    You could also notice that it's a 3-4-5 right triangle, and so the hypotenuse has to be 50. I don't know if they'd consider that to be using the Pythagorean Theorem though >.
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