Use the law of Cosines to solve the given triangle. Round your answer to two decimal places.
?
A = 140°, b = 8, c = 9
?
A. a ? 15.98, B ? 21.23°, C ? 18.77°
B. a ? 8, B ? 18.77°, C ? 21.23°
C. a ? 15.98, B ? 18.77°, C ? 21.23°
D. a ? 15.98, B ? 20°, C ? 20°
E. a ? 9, B ? 18.77°, C ? 21.23°
Answer: C
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