Question

A driveway that is 25 m long is built on an incline. It has risen a distance of 4 m by the time it reaches from one end to the other. What is the angle of elevation of the driveway?

Answer 1

6.250000 is the answer

Answer 2

9.1°

Explanation:

The tangent of the angle is the ratio of rise to run, so the angle is ...

angle = arctan(rise/run) = arctan(4/25)

angle ≈ 9.1°

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Comment on the angle

Except in certain mountainous regions, the maximum grade of an interstate highway is limited to 6% (3.4°). The grade of this driveway is 16%, which would be considered very steep.