Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Chapter 6 - Trigonometric Functions - 6.1 Angles and Their Measure - 6.1 Assess Your Understanding: 57

Answer

$-30°$

Work Step by Step

To convert from radians to degrees, the measurement in radians must be multiplied by $\frac{180°}{\pi}$. Therefore $-\frac{\pi}{6}$ radians= $-\frac{\pi}{6} \times \frac{180°}{\pi}$ $=-\frac{180°}{6}$ $=-30°$
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