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A wheelchair ramp is to be built beside the steps to the campus library. Find the angle of elevation of the 20 -foot ramp, to the nearest tenth of a degree, if its final height is 5 feet.

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  1. 17 May, 00:55
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    14.5°

    Step-by-step explanation:

    length of ramp, l = 20 foot

    height of ramp, h = 5 foot

    Let θ is the angle of inclination

    Sin θ = h/l

    Sin θ = 5 / 20

    Sin θ = 0.25

    θ = 14.5°

    Thus, the inclination of ramp is 14.5°.
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