Answer
(a)
$405°$
$-315°$
(b)
$-60°$
$300°$
Work Step by Step
(a)
$45°+360°=405°$
$45°-360=-315°$
(b)
$-420°+360°=-60°~~$
$-60°+360°=-420°+2\times360°=300°$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 6 - 6.1 - Angles and Their Measure - 6.1 Exercises - Page 430: 24
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