Answer
$0.97939940$
Work Step by Step
Step 1: $78^{\circ}21'=78\frac{21}{60}^{\circ}=78.35^{\circ}$
Step 2: $\sin78^{\circ}21'=\sin78.35^{\circ}\approx0.97939940$
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 2 - Test - Page 97: 12a
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