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Find the length of a using the Pythagorean theorem

Find the length of a using the Pythagorean theorem-example-1

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Answer:


{a }^(2) + {9}^(2) = {15}^(2) \\ {a}^(2) = - 81 + 225 \\ {a}^(2) = 144 \\ a = √(144 \: ) \\ a = 12

User CrazyEnigma
by
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4 votes

Answer:

a = 12

Explanation:

a² + 9² = 15²

a² = 15² - 9²

a² = 225 - 81

a² = 144

take the square root of both sides

a = 12

User Nick Bolton
by
8.1k points

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