Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Chapter 1 - Review Exercises: 12

Answer

$58^{\circ}$

Work Step by Step

1. Vertical angles are equal to each other, then we can construct following equation. 9x+4=12x-14 12x-9x=4+14 3x=18 x=6 2. Then plug vale of x to find the angle 9(6)+4=58
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