Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 8 - Application of Trigonometry - 8.1 The Law of Sines - 8.1 Exercises - Page 757: 76

Answer

$$732{\text{ f}}{{\text{t}}^2}$$

Work Step by Step

$$\eqalign{ & C = {\text{72}}.{\text{2}}^\circ ,b = {\text{43}}.{\text{8 ft}},a = {\text{35}}.{\text{1 ft}} \cr & {\text{Find the area of the triangle using the formula }}A = \frac{1}{2}ab\sin C \cr & A = \frac{1}{2}\left( {{\text{35}}.{\text{1 ft}}} \right)\left( {{\text{43}}.{\text{8 ft}}} \right)\sin \left( {{\text{72}}.{\text{2}}^\circ } \right) \cr & {\text{Using a calculator}} \cr & A \approx 732{\text{ f}}{{\text{t}}^2} \cr} $$
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