Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 4 - Section 4.1 - Angles and Radian Measure - Exercise Set: 71

Answer

3$\pi$ inches $\approx$ 9.42 inches

Work Step by Step

θ =45 ° = $\frac{\pi}{4}$ As we know, s = θr . So, s = 12 x $\frac{\pi}{4}$ = 3$\pi$ inches $\approx$ 9.42 inches.
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