A road sign shows that a hill has a grade of 8%. What is the angle of inclination of the hill
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A road sign shows that a hill has a grade of 8%. What is the angle of inclination of the hill

[From: ] [author: ] [Date: 13-01-30] [Hit: ]
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To the nearest tenth of a degree.

I have an exam tomorrow, so if you could explain that would be appreciated.

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tan = 8/100

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Angle = arctan(8/100) = 4.6°

Note that 100% grade = 45° (slope = 100/100 = 1)
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