1. Prove that :sinA4A+sin B i A+ B005 4 + 005 ~ – InterviewSolution

1.	1. Prove that :sinA4A+sin B i A+ B005 4 + 005 ~
Answer» 2sin(a+b)/2cos(a-b)/2/2cos(a+b)/2cos(a-b)/2=sin(a+b/2)/cos(a+b)/2=tan(a+b)/2RHS

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