Chapter 11.3, Problem 41E

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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.*

Upon approaching a house, Mary hears Lynn shout to her. Mary, who is standing

To determine

**To calculate:**

The measure of angle of elevation as Mary looks up at Lynn.

Explanation

**Given:**

Upon approaching a house, Mary hears Lynn shout to her. Mary, who is standing 10 ft from the house, looks upto see Lynn in the third-story window approximately 32 ft away.

**Definition used:**

The trigonometric ratio

**Calculation:**

The pictorial representation of the problem is shown below.

Let

From the figure,

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

Press

Since we need to find the value of degree, we need to change the mode to degrees

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