Answer
$= 52.0$ cm$^{2}$
Work Step by Step
$A = \frac{1}{2}absin(C)$
$= (0.5)(10)(12)sin(120)$
$= (0.5)120sin(120)$
$=(0.5)(103.92304...)$
$= 51.9615....$ cm$^{2}$
$= 52.0$ cm$^{2}$
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
Published by
Cengage Learning
ISBN 10:
1111826854
ISBN 13:
978-1-11182-685-7
Chapter 7 - Section 7.4 - The Area of a Triangle - 7.4 Problem Set - Page 396: 12
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