Chapter 11.3, Problem 37E

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6th Edition

Daniel C. Alexander + 1 other

ISBN: 9781285195698

Textbook Problem

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*In Exercises 37 to 43, angle measures should be given to the nearest degree; distance should be given to the nearest tenth of a unit.*

When her airplane is descending to land, the pilot notes an angle of depression of

To determine

**To calculate:**

The distance *x *from the plane to touchdown.

Explanation

**Given:**

When an airplane is descending to land, the pilot notes an angle of depression of

**Definition used:**

The trigonometric ratio

**Calculation:**

Consider the angle of depression as

Thus

From the figure, we see that

Let us use Ti-83 calculator to find the value of *x*

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