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Precalculus Enhanced with Graphing Utilities

Sullivan

$Math Studyset 91影视 Explanations$ Math

6th Edition 路 1200 pages

ISBN: 9780321795465

Chapter 7: Q. 78 (page 504)

In Problems $76 - 80$ , use a calculator to find an approximate value for each expression, rounded to two decimal places.
$\cos^{- 1} (- 0.2)$

Short Answer

Expert verified

The approximate value is $\cos^{- 1} (- 0.2) = 1.77$

Step by step solution

01

Given information

Given expression $\cos^{- 1} (- 0.2)$

02

Use a calculator and calculate the value

Calculating, we get

$\cos^{- 1} (- 0.2) = 1.77$

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