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A 20 ft ladder is placed next to a building. The ladder forms a 72° angle with the ground. How far is base of the ladder from the base of the building? Round your answer to the nearest tenth of a foot. Show your work.

 Jan 7, 2019

The ladder is the hypotenuse of a right triangle 


20 cos (72) = 6.18 ft ~~ 6.2 ft

 Jan 7, 2019

Imagine a right triangle: We have adjacent/hypotenuse, so 20 cos 72 approx 6.2! Like what EP had said!

 Jan 8, 2019

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