Answer
angle
Work Step by Step
If we know two angles of the triangle and one side, we first find the missing angle (by subtracting the sum of the given angles from $180^\circ$). Then we obtain the area using the appropriate formula.
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: 2
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