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OpenStudy (anonymous):
Danny has a 15 foot board. If he wants the end of the ramp to be 4 feet off the ground, what angle will be formed between the board and the ground. Round your answer to the nearest tenth.
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OpenStudy (anonymous):
Assume you have a right triangle, formed by the ground (g), the board (15, the hypotenuse) and the height off the ground, 4. Sin @ = height/hypotenuse = 4/15 @ = arc sin (4/15), the angle whose sin is 4/15. Calculator or table.
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