Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Chapter 3 - Review Exercises - Page 130: 49

Answer

$0.3898$

Work Step by Step

Step 1: We ensure that the calculator is in radian mode. Step 2: $\cos s=0.9250$ can be written as $s=\cos^{-1} 0.9250$ Step 3: Using the inverse cosine function in the calculator, we type $\cos^{-1} 0.9250$ into the calculator and solve. Step 4: $s=\cos^{-1} 0.9250\approx0.3898$
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