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: 63

Answer

$\frac{7\pi}{6}$

Work Step by Step

$\frac{19\pi}{6}$ subtract two multiples of $2\pi$ from $\frac{19\pi}{6}$ to find the positive coterminal angle less than 2$\pi$. $\frac{19\pi}{6}$ - $2\pi$ = $\frac{7\pi}{6}$
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