Concept explainers
a.
Find the height h of the slide.
a.

Answer to Problem 30E
Explanation of Solution
Given information:
The designers of a water park have sketched a preliminary drawing of a new slide
Find the height h of the slide.
Calculation:
Consider the following figure
Since the sine of the angle is given by the ratio of the length of the perpendicular to the hypotenuse, therefore in right angled triangle
Put the values
Hence, the height
b.
Find the angle of depression
b.

Answer to Problem 30E
Explanation of Solution
Given information:
The designers of a water park have sketched a preliminary drawing of a new slide
Find the angle of depression
Calculation:
Consider the following figure
Since the tangent of the angle is given by the ratio of the length of the perpendicular to the base, therefore in right angled triangle
Put the values
Since
Hence, the angle of depression from the top of the slide to the end of the slide at the ground is
c.
Find an interval for how far a rider travels horizontally.
c.

Answer to Problem 30E
Explanation of Solution
Given information:
The designers of a water park have sketched a preliminary drawing of a new slide
Safety restrictions require the angle of depression to be no less than
Calculation:
Consider the following figure
Assume that the angle of depression of the ride is bounded by safety restrictions to be less than
When the minimum angle of depression is
When the maximum angle of depression is
Hence, the rider travels horizontally between
Chapter 4 Solutions
EBK PRECALCULUS W/LIMITS
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