If A, B and C be the angles of a triangle, then which of the following – InterviewSolution

InterviewSolution

1.	If A, B and C be the angles of a triangle, then which of the following is incorrect relation :
Answer» `sin""(A+B)/(2)=COS""(C )/(2)` `cos((A+B)/(2))=sin""(C )/(2)` `tan""((A+B)/(2))=sec""(C )/(2)` `COT""((A+B)/(2))=tan""(C )/(2)` ANSWER :C

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