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" Prove the "(a-b)^(2)cos^(2)(C)/(2)+(a+...

" Prove the "(a-b)^(2)cos^(2)(C)/(2)+(a+b)^(2)sin^(2)(C)/(2)=c^(2)

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In o+ABC, prove that (a-b^(2)cos^(2)(C)/(2)+(a+b)^(2)sin^(2)(C)/(2)=c^(2)

For DeltaABC prove that, (a-b)^(2)cos^(2)""(C)/(2)+(a+b)^(2)sin^(2)""(C)/(2)=c^(2)

In any DeltaABC , prove that (a-b)^(2)cos^(2)(C/2)+(a+b)^(2)sin^(2)(C /2)=c^(2) .

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prove that : (c-b)^(2)cos^(2)((A)/(2))+(c+b)^(2)sin^(2)((A)/(2))=a^(2)

In Delta ABC prove that (a-b)^2 cos^2(C/2) + (a+b)^2 sin^2(C/2) = c^2