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18 December, 17:12

A 20-ft ladder leans against a building so that the angle between the ground and the ladder is 72 degrees. how high does the ladder reach on the build

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  1. 18 December, 17:40
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    Sin (72°) = x:20ft.

    sin (72°) * 20ft. = 19ft 252 inches

    the ladder reach 19ft 252 inches tall on the building.
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