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posted by Anon Monday, December 3, 2012 at 12:57pm.
The grade of a highway up a hill is 50%. How much change in horizontal distance is there if the vertical height of the hill is 175 feet?
sinA = 50%/100% = 0.50. A = 30o. tan30 = Y/X = 175/X X = 175/tan30 = 303 Ft.
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