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 - Chapter Test - Page 460: 4



Work Step by Step

In order to convert the value from radians to degrees, we multiply by $\dfrac{180^{\circ}}{\pi}$. Therefore $\dfrac{-\pi}{8}\text{radians} \\=\dfrac{-\pi}{8} \times \dfrac{180^{\circ}}{\pi} =-225^{\circ}$
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