   Chapter 11.2, Problem 13E ### 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 9 to 16, use a calculator to find the indicated cosine ratio to four decimal places. cos 90 ∘

To determine

To find:

To find cos90.

Explanation

Consider the following value, cos90.

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

90cos0

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

<

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