angle for roads from % to degrees and the other way around.

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angle for roads from % to degrees and the other way around.

Postby student » Sat May 21, 2005 11:03 pm

Hello,

Does anybody know how to convert from degrees of the angle of a road to percentage (and the other way around) what you see on signs at a road in a hilly area?
student
 

Postby Guest » Sat May 21, 2005 11:50 pm

Express the percent grade as a decimal frction, ie 7% grade is 0.07. Then the angle is simply the arctangent of this number, for a 0.07 grade, 4 degrees.
Guest
 


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