AnswersOH-Geometry BLaw of Cosines

Law of Cosines Answers

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Which equation correctly uses the law of cosines to solve for the length s?

A
92 = s2 + 102 – 2(s)(10)cos(100°)
B
9 = s + 10 – 2(s)(10)cos(100°)
C
102 = s2 + 100 – 2(s)(10)cos(100°)
D
s2 = 92 + 102 – 2(9)(10)cos(100°)

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