Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 13, Trigonometric Ratios and Functions - 13.2 Define General Angles and Use Radian Measure - 13.2 Exercises - Skill Practice - Page 863: 11

Answer

See image

Work Step by Step

The given angle is $\frac{5\pi}{18}$. Notice that, the angle measure is positive. Since our angle is positive, we go counterclockwise $\frac{5\pi}{18}$. Therefore, the given angle lies somewhere between $\frac{\pi}{4}$ and $\frac{\pi}{3}$.
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