Answer
$\frac{3\sqrt {21}}{14}$
Work Step by Step
From exercise 59, we know that $ c=\sqrt 7$.
Using the law of sines, we have
$\frac{SinB}{b}=\frac{sinC}{c}$
Plug-in the numbers:
$ sinB=\frac{3sin60^\circ}{\sqrt 7}=\frac{3\sqrt {21}}{14}$
Thomas' Calculus 13th Edition
by Thomas Jr., George B.
Published by
Pearson
ISBN 10:
0-32187-896-5
ISBN 13:
978-0-32187-896-0
Chapter 1: Functions - Section 1.3 - Trigonometric Functions - Exercises 1.3 - Page 28: 62
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