A 7-foot ladder is leaned against a building in such a way that the bottom of the ladder is 4 feet from the base of the wall. Find the angle formed between the ladder and the ground.

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asked May 10, 2015 75.8k views

1 vote

A 7-foot ladder is leaned against a building in such a way that the bottom of the ladder is 4 feet from the base of the wall. Find the angle formed between the ladder and the ground.

Mathematics
high-school

TilmannZ asked

by TilmannZ

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1 Answer

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Treat this situation as a right-angled triangle. I have attached a picture below.

cos θ =
(4)/(7)

⇒ θ =
$\cos^(-1)(4)/(7)$
= 55° 2s.f.

A 7-foot ladder is leaned against a building in such a way that the bottom of the-example-1

Cjol answered May 14, 2015

by Cjol

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