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If A, B, C are any angles then prove sin(A)sin(B)sin(A-B) + sin(B)sin(C)sin(B-C) + sin(C)sin(A)sin(C-A) + sin(A-B)sin(B-C)sin(C-A) =0

Answer» If A, B, C are any angles then prove
sin(A)sin(B)sin(A-B) + sin(B)sin(C)sin(B-C) + sin(C)sin(A)sin(C-A) + sin(A-B)sin(B-C)sin(C-A) =0


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