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The angle of inclination of a road is often expressed as percent grade, which is the vertical rise divided by the horizontal run (expressed as a percent). A 8 % grade corresponds to a road that rises 8 ft for every 100 ft along the horizontal. Find the angle of inclination that corresponds to a 8 % grade. Round your answer to the nearest minute.
\theta =tan^-1(.08)= 4.57 degree
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