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If 0 < _ alfa , beta < _ 90 degree and tan ( alfa + beta )=3 & tan (alfa - beta)=2 Then find sin 2alfa =? A) -1/(root 2) B) 1/(root 2) C)1/2. D) none of these |
| Answer» If 0 < _ alfa , beta < _ 90 degree and tan ( alfa + beta )=3 & tan (alfa - beta)=2 Then find sin 2alfa =? A) -1/(root 2) B) 1/(root 2) C)1/2. D) none of these | |