# math

a ladder 17 feet long is leaned up against a house, reaching a height of 15 feet. how far from the house is the base of the ladder?

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1. Use the Pythagorean theorem to find the other leg of this right triangle.

a^2 + 15^2 = 17^2

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2. Or if you recognize that the triangle formed is a 17-15-8 Pythagorean triple, you can easily guess that the third side is 8 ft.

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3. 8ft

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