Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 3 - Section 3.3 - Definition III: Circular Functions - 3.3 Problem Set - Page 143: 13

Answer

$\cos\frac{\pi}{3}$ = $\frac{1}{2}$

Work Step by Step

Recall Definition 3: $\cos\theta$ = x Substitute: $\cos\frac{\pi}{3}$ = $\frac{1}{2}$
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