proove that: sin.sin(60-A)sin(60+A)=1/4.sin3A?

Asked by Sindhura K Reddy | 12th Aug, 2010, 12:00: AM

Expert Answer:

Dear Student
Here is the solution of your question
Consider LHS = sinA. sin(60-A)sin(60+A)=

Answered by  | 13th Aug, 2010, 09:51: AM

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