Answer
$30^{0}$
Work Step by Step
$\tan \theta =\dfrac {1}{\sqrt {3}}\Rightarrow \theta =\tan ^{-1}\theta \dfrac {1}{\sqrt {3}}=30^{0}$
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 8 - Application of Trigonometry - 8.4 Algebraically Defined Vectors and the Dot Product - 8.4 Exercises - Page 789: 2
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