Answer
$1$
Work Step by Step
Convert the angle measure to degrees to obtain:
$=\frac{\pi}{2} \cdot \frac{180^o}{\pi} = 90^o$
Thus,
$\sin{(\frac{\pi}{2})}
\\= \sin{90^o}$
Trigonometry (11th Edition) Clone
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
978-0-13-421743-7
ISBN 13:
978-0-13421-743-7
Chapter 3 - Radian Measure and the Unit Circle - Section 3.1 Radian Measure - 3.1 Exercises - Page 105: 73
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