Quandaries and Queries


incline- % grade as to degree. ie 6% hwy grade= what degree of incline?



A 6% grade means that in a straight section of the road the rise is 6% of the run. Thus in the diagram below the ratio of the rise to the run is 0.06.

Thus the tangent of the angle t is 0.06 and

t = tan-1(0.06) = 3.43 degrees.



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