Answer
$0.9703$
Work Step by Step
Ensuring that the calculator is in radian mode, type $\cos (-0.2443)$ into the calculator and solve:
$\cos (-0.2443)\approx0.9703$
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 3 - Review Exercises - Page 130: 45
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