   Chapter 8.2, Problem 74E ### Calculus: An Applied Approach (Min...

10th Edition
Ron Larson
ISBN: 9781305860919

#### Solutions

Chapter
Section ### Calculus: An Applied Approach (Min...

10th Edition
Ron Larson
ISBN: 9781305860919
Textbook Problem
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# Skateboard Ramp A skateboard ramp with a height of 4 feet has an angle of elevation of 18° (see figure). What is the length c of the skateboard ramp? To determine

To calculate: The length c of the skateboard ramp when the angle of elevation is 18° and height of ramp is 4 feet. Explanation

Given Information:

The figure is shown below,

Formula used:

Definition of sine function:

sinθ=yr

Where, x is the length of the side adjacent to θ, y is the length of the side opposite to θ, and r=x2+y2 is the length of hypotenuse which is not equal to 0.

Calculation:

Consider the figure,

Now apply sine on triangle ABC,

sinθ=ABAC

Substitute the value of θ=18°,

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