In a triangle ABC if the sides a,b,c are in AP and 2/1!.9!+2/3!.7!+1/5!.5!=8a/(2b)!,then the maximum value of tanA.tanB is equal to
A)1/2 B)1/3 C) 1/4 D) 1/5
In a triangle ABC if the sides a,b,c are in AP and 2/1!.9!+2/3!.7!+1/5!.5!=8a/(2b)!,then the maximum value of tanA.tanB is equal to
A)1/2 B)1/3 C) 1/4 D) 1/5