bookchanceortis1 bookchanceortis1

02-11-2018
Mathematics

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Which of the following equations correctly represnt the law of cosines?
A. b2 = a2 + b2 – 2ab ⋅ cos(C)
B. c2 = a2 + b2 – 2ab ⋅ cos(B)
C. b2 = a2 + c2 – 2ac ⋅ cos(B)
D. a2 = b2 + c2 – 2ac ⋅ cos(A)

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wegnerkolmp2741o wegnerkolmp2741o

02-11-2018

law of cosines

c^2 = a^2+b^2-2abcosC

b^2 = a^2+c^2-2accosB

a^2 = b^2+c^2-2bccosA

Choice C

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