Answer
$135^\circ$ or $S\ 45^\circ E$.
Work Step by Step
As seen in the figure ($\theta=135^\circ$), we can express the bearing of the airplane as $135^\circ$ or $S\ 45^\circ E$.
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 5 - Trigonometric Functions - 5.4 Solutions and Applications off Right Triangles - 5.4 Exercises - Page 550: 63
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