Answer
$x= 57.48877$ cm
Work Step by Step
Since, adj =22 cm and hyp = x
Thus,
$cos\theta=\frac{adj}{hyp}$
$cos(\frac{3\pi}{8})=\frac{22}{x }$
Need to solve $x$.
$x=\frac{22}{cos(\frac{3\pi}{8})}$
Hence, $x= 57.48877$ cm
Calculus 8th Edition
by Stewart, James
Published by
Cengage
ISBN 10:
1285740629
ISBN 13:
978-1-28574-062-1
Appendix D - Trigonometry - D Exercises - Page A32: 38
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