Answer
$OQ = 0.7880$
Work Step by Step
$\frac{OQ}{OP} = cos ~38^{\circ}$
$\frac{OQ}{OP} = cos ~38^{\circ}$
$OQ = (OP)~(cos ~38^{\circ})$
$OQ = (1)~(cos ~38^{\circ})$
$OQ = 0.7880$
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 - Radian Measure and the Unit Circle - Section 3.3 The Unit Circle and Circular Functions - 3.3 Exercises - Page 120: 88a
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