Answer
$\approx0.38$
Work Step by Step
Use a calculator in radian mode and then round the result to to decimal places:
$\sin{(\frac{\pi}{8})}=0.3826834324\approx0.38$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 6 - Trigonometric Functions - Chapter Review - Review Exercises - Page 435: 41
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