Determine whether the Law of Sines or the Law of Cosine is needed to solve the triangle. Then solve the triangle.
?
a = 18, b = 20, C = 65°
?
A. Law of Sines; A ? 65°, B ? 52.79°, c ? 20
B. Law of Sines; A ? 52.79°, B ? 65°, c ? 20
C. Law of Cosines; A ? 52.79°, B ? 62.21°, c ? 20.49
D. Law of Sines; No solution
E. Law of Cosines; No solution
Answer: C
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