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: 17


$235^{\circ}$ and $-485^{\circ}$

Work Step by Step

In order to get the co-terminal angle we will have to add and subtract $360^{\circ}$ from the given angle. We need to add $360^{\circ}$ in the given radian measurements. Thus, we have $-125^{\circ}+360^{\circ}=235^{\circ}$ Now, subtract $360^{\circ}$ from the given radian measurements. Thus, we have $-125^{\circ}-360^{\circ}=-485^{\circ}$
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