Trigonometry (10th Edition)

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

Chapter 3 - Radian Measure and the Unit Circle - Section 3.3 The Unit Circle and Circular Functions - 3.3 Exercises - Page 117: 26

Answer

cos $(-5.2825)\approx0.5397$.

Work Step by Step

Step 1: Convert the calculator to radian mode. Step 2: Type cos $(-5.2825)$ into the calculator and press enter. Step 3: Therefore, cos $(-5.2825)\approx0.5397$.
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