Chapter 11.2, Problem 34E

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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.*

Dale looks up to see his friend Lisa waving from her apartment window 30 ft. from him. If Dale is standing 10 ft. from the building. What is the angle of elevation as Dale looks up at Lisa?.

To determine

**To find:**

The angle of elevation as Dale looks up at Lisa by using the following condition,

“Dale looks up to see his friend Lisa waving from her apartment window 30 ft. from him. If Dale is standing 10 ft. from the building”

Explanation

Consider the following figure,

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

From the given figure the value 30 ft

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