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The law of cosine is A squared + B squared -2abcosC. find he value of 2abcosC  Side a is 2. Side b is 4. Side c is 5 A.37 B.20 C.40 D.-40
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The law of cosine is A squared + B squared -2abcosC. find he value of 2abcosC 

Side a is 2. Side b is 4. Side c is 5

A.37
B.20
C.40
D.-40

User Leompeters
by
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1 Answer

1 vote
d I think but not 100% sure
User StarSheriff
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