Trigonometry (10th Edition)

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

Chapter 2 - Acute Angles and Right Triangles - Section 2.3 Finding Trigonometric Function Values Using a Calculator - 2.3 Exercises: 52

Answer

False

Work Step by Step

$2\cos (38^{\circ} 22') = 1.568109388$ $\cos (76^{\circ} 44') = 0.2994835258$ $2\cos (38^{\circ} 22') \ne \cos (76^{\circ} 44')$
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