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caitlindeland
caitlindeland caitlindeland
  • 17-10-2016
  • Mathematics
Answered

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

Verified Answer :

egramlick
egramlick egramlick
  • 17-10-2016

d I think but not 100% sure

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