
Concept explainers
Find the slope of the road and change in elevation over one mile stretch of the road.

Answer to Problem 84E
The slope of the road is 0.2027 and change in elevation over one mile stretch is 1049 feet.
Explanation of Solution
Given:
The slope of a road which has an inclination 0.20 radian from the horizontal
A straight road rises with an inclination of 0.20 radian from the horizontal.
To, find the value of
Slope of the road
Finding thechange in elevation over one mile stretch of the road.
The figure for the road can be depicted as follows:
In the figure to find the change in elevation over 1 mile, find
From triangle
Since the triangles
That is,
Substitute the values,
Thus, the slope of the road is 0.2027 and change inelevation over one mile stretch is 1049 feet.
Chapter 10 Solutions
Precalculus with Limits
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