Answer
$a \approx0.71, B= 80^\circ,
c \approx4.06$
Work Step by Step
Given $b=4, A=10^\circ$, we have $a=b\ tanA=4tan10^\circ\approx0.71, B=90^\circ-10^\circ=80^\circ,
c=\frac{b}{sinB}=\frac{4}{sin80^\circ}\approx4.06$
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: 33
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