Trigonometry (10th Edition)

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: 21

Answer

69$^{\circ}$ and 21$^{\circ}$

Work Step by Step

9x + 6 + 3x = 90$^{\circ}$ 12x + 6 = 90$^{\circ}$ 12x = 84$^{\circ}$ x = 7$^{\circ}$ therefore 9x + 6 = 69$^{\circ}$ and 3x = 21$^{\circ}$
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