Answer
$12.51^{\circ}$
Work Step by Step
Ensuring that the calculator is in degree mode, we enter $\cot^{-1} (4.5046388)$ as $\tan^{-1} (\frac{1}{4.5046388})$ into the calculator and solve:
$\tan^{-1} (\frac{1}{4.5046388})\approx12.51^{\circ}$
Trigonometry (10th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671775
ISBN 13:
978-0-32167-177-6
Chapter 6 - Review Exercises - Page 285: 20
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