Answer
150° and 30°
Work Step by Step
(20x+10°) + (3x+9°) = 180°
23x + 19° = 180°
23x = 161
x = 7
20x+10°= 150° and 3x+9° = 30°
Trigonometry (10th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671775
ISBN 13:
978-0-32167-177-6
Chapter 1 - Trigonometric Functions - Section 1.1 Angles - 1.1 Exercises - Page 7: 14
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