Answer
$180^{0}$
Work Step by Step
In order to be supplement
$x+\theta =180^{0}\Rightarrow \theta =180^{0}-x^{0}$
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 - 5.1 Angles - 5.1 Exercises - Page 503: 3
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