\"\"

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The lengths of two sides of a right triangle are \"\".

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To find: side a.

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Apply Pythagorean theorem: \"a

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\"\"                       (Substitute 73 for b and 82 for c)

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\"\"                 (Evaluate powers: \"\")\"\"

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\"\"(Subtract 5329 from each side)

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\"\"                              (Subtract: \"\")

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\"\"                       (Apply square root to each side)

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\"\"                   (Write \"\")

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\"\"                                (Cancel square and root)\"\"

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The length of the third side \"\".

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