Answer
(a)60°
(b)20°
(c)75°
Work Step by Step
(a)180°-120°=60°
(b)200°-180°=20°
(c)360°-285°=75°
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 6 - Section 6.3 - Trigonometric Functions of Angles - 6.3 Exercises - Page 498: 5
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