Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter 5 - Trigonometric Functions - Section 5.1 Angles and Their Measures - 5.1 Assess Your Understanding - Page 386: 48

Answer

$150^{\circ}$

Work Step by Step

$ \because 1 \text { radian } = \dfrac{180}{\pi} \text { degrees}$ $\therefore \dfrac{5 \pi}{6} \text{ rad } = \dfrac{5 \pi}{6} \times \dfrac{180}{\pi} = \boxed{150^{\circ}}$
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