If : `x=sin(B-C) * cos A, ` `y=sin(C-A) * cos B, ` `z=sin(A-B) * cos C – InterviewSolution

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1.	If : `x=sin(B-C) * cos A, ` `y=sin(C-A) * cos B, ` `z=sin(A-B) * cos C, ` then : x+y+z=(a) sin(A-B-C) (b) cos(A-B-C) (c)0 (d)-1A. sin (A-B-C)B. cos (A-B-C)C. 0D. -1
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