caitlindeland caitlindeland

17-10-2016
Mathematics

contestada

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

Respuesta :

egramlick egramlick

17-10-2016

d I think but not 100% sure

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