Chapter 11.2, Problem 18E

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6th Edition

Daniel C. Alexander + 1 other

ISBN: 9781285195698

Textbook Problem

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*In Exercise 17 to 22, use either the sine ratio or the cosine ratio to find the length of the indicated sides of the triangle correct to the nearest tenth of a unit*.

To determine

**To find:**

The length of the indicated sides of the following triangle,

Explanation

Consider the following figure,

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

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

Then *5 *in. is the length of the leg adjacent to *d* is the length of leg opposite to

Therefore,

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

Substitute the value of

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