Answer
$b \approx3.08, A= 70^\circ,
a \approx8.46$
Work Step by Step
Given $c=9, B=20^\circ$, we have $b=c\ sinB=9siin20^\circ\approx3.08, A=90^\circ-20^\circ=70^\circ,
a=c\ sinA=9siin70^\circ\approx8.46$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 8 - Applications of Trigonometric Functions - 8.1 Right Triangle Trigonometry; Applications - 8.1 Assess Your Understanding - Page 519: 37
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