   Chapter 11.2, Problem 31E ### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698

#### Solutions

Chapter
Section ### Elementary Geometry for College St...

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.When an airplane is descending to land, the angle of depression is 5 ∘ . When the plane has a reading of 100 ft. on the altimeter, what is its distance x from touchdown? To determine

To find:

To find the distance x from touchdown by using the following condition,

“When an airplane is descending to land, the angle of depression is 5. When the plane has a reading of 100 ft. on the altimeter”

Explanation

Consider the following figure,

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

From the given figure the value x ft

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