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A ramp 22 feet long in length rises to a platform 11 feet off the ground, What is the angle of elevation

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Explanation:

The 11 ft elevation is the OPPOSITE leg and the 22ft ramp is the HYPOTENUSE of a right triangle

Recall that sinΦ = OPPOSITE LEG / HYPOTENUSE for right triangles

sin Φ = 11/22

Φ = arcsin (11/22) = 30 degrees

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