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According to OSHA, a ladder that is placed against a wall should make a 75.5 degree angle with the ground for optimal safety. To the nearest tenth of a foot, what is the maximum height that a 10-ft ladder can safely reach?(trigonometry)

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what is 10*sin75.5deg ?

9.7ft

Hypotenuse equals 10
Angle from ground to ladder: 75.5 degree
Height 9.7

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