whyyyyyyyyyyyyyyyyyyyyy

Asked by  | 11th Dec, 2009, 06:47: PM

Expert Answer:

Sin 2A = sin (A+A)= sin Acos A+sin Acos A  =2 sin Acos A(using sin (x+y) =sin x cos y +siny cos A

Answered by  | 12th Dec, 2009, 05:54: PM

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