Solve the triangle. Round to the nearest tenth.
B = 81°, a = 4.7, c = 6.8
A = 37.55
C = 62
b = 7.6
Draw a triangle labeling angles A, B, and C, and their corresponding opposite sides a, b, and c. Using the Law of Cosines, which form solves for the measure of angle A? Use the inverse cosine function on the calculator to find angle A in degrees.
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Law of Cosines