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if Agt0,Bgt0 and A+B=pi/3 then the maxim...

if `Agt0,Bgt0 and A+B=pi/3 then the maximum value of tanA.tanB is (A) `1/3` (B) `1/6` (C) `1/2` (D) 1

A

`1/sqrt3`

B

`1/3`

C

`1/2`

D

`sqrt3`

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