In order for gravel roads to have proper drainage, the highest point on the road (the crown) should slope downward on either side to the shoulders of the road. EPA guidelines for maintaining gravel roads with a low volume of traffic suggest that a 20 -ft wide road should have a centerline crown that is 5 to 7 in. high a. To the nearest tenth of a degree, find the angle of depression for a 5 -in. centerline crown. b. To the nearest tenth of a degree, find the angle of depression for a 7 -in. centerline crown.
In order for gravel roads to have proper drainage, the highest point on the road (the crown) should slope downward on either side to the shoulders of the road. EPA guidelines for maintaining gravel roads with a low volume of traffic suggest that a 20 -ft wide road should have a centerline crown that is 5 to 7 in. high a. To the nearest tenth of a degree, find the angle of depression for a 5 -in. centerline crown. b. To the nearest tenth of a degree, find the angle of depression for a 7 -in. centerline crown.
Solution Summary: The author calculates the angle of depression for a 5in centerline crown, to the nearest tenth.
In order for gravel roads to have proper drainage, the highest point on the road (the crown) should slope downward on either side to the shoulders of the road. EPA guidelines for maintaining gravel roads with a low volume of traffic suggest that a
20
-ft
wide road should have a centerline crown that is
5
to
7
in. high
a. To the nearest tenth of a degree, find the angle of depression for a
5
-in. centerline crown.
b. To the nearest tenth of a degree, find the angle of depression for a
7
-in. centerline crown.
A 20 foot ladder rests on level ground; its head (top) is against a vertical wall. The bottom of the ladder begins by being 12 feet from the wall but begins moving away at the rate of 0.1 feet per second. At what rate is the top of the ladder slipping down the wall? You may use a calculator.
Explain the focus and reasons for establishment of 12.4.1(root test) and 12.4.2(ratio test)
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