Question

( sqrt{0} )
( 1- ) Heraterents ( ^{2} )
( 1-(tan A cdot tan B)^{2} )
( 20 operatorname{sen} A-2 tan A cdot tan ^{2} B )
( 1-left(tan A cdot tan ^{2}right)^{2} )
( frac{2 tan left(1+tan ^{2} Bright)}{1-tan ^{2} A cdot tan ^{2} beta} )

# tan (A+B) - tan (A&B). AT 3

Solution