Chapter 11.2, Problem 32E

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6th Edition

Daniel C. Alexander + 1 other

ISBN: 9781285195698

Textbook Problem

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*In Exercise 29 to 37, angle measures should be given to the nearest degree; distances should be given to the nearest tenth of a unit.*

At a point 200 ft. from the base of a cliff, Journey sees the top of the cliff through an angle of elevation of

To determine

**To find:**

To find the height of the cliff by using the following condition,

“At a point 200 ft. from the base of a cliff, Journey sees the top of the cliff through an angle of elevation of

Explanation

Consider the following figure,

General formula for cosine ratio and sin ratio is given below,

From the given figure the value *x* ft. is the hypotenuse value since it is opposite to right angle.

Then *y* ft. is the length of the leg opposite to

Therefore,

Using a graphing calculator in degree mode, follow the following key sequence,

Substitute the value of

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