Question 1093841: Solve triangle ABC using the Law of Cosines. Round to the nearest tenth.
side c = 62.5 cm
∠B = 20°
side a = 88.2 cm
Select one:
a. b = 36.4 cm, ∠A = 124.0°, ∠C = 36.0°
b. b = 80.7 cm, ∠A = 158.0°, ∠C = 2.0°
c. b = 36.4 cm, ∠A = 56.0°, ∠C = 104.0°
d. b = 80.7 cm, ∠A = 22.0°, ∠C = 138.0°
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Solve triangle ABC using the Law of Cosines. Round to the nearest tenth.
side c = 62.5 cm
B = 20°
side a = 88.2 cm
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b^2 = a^2 + c^2 - 2ac*cos(B)
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I would use the Law of Sines to find 2nd angle.
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Notice that if B = 90 degs, it's the Pythagorean Theorem.
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