Question

52. A 33-tt ladder leans against a building so that the angle between the ground and the ladder is 80". How high does the

ladder reach up the side of the building?

Answer 1

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Answer:

32.5 ft

Explanation:

The length of the side opposite the given angle is found using the sine relation:

Sin = Opposite/Hypotenuse

height on building = (33 ft)·sin(80°) ≈ 32.5 ft

The ladder reaches about 32.5 feet up the side of the building.

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Additional comment

The maximum angle compliant with OSHA safety rules is 75.5°.