Question

Prove that
$prove \: that \: \tan ^{ - 1} 1 + \tan ^{ - 1} 2 = \pi - \tan^{ - 1} 3$
plz help 12th math it's urgent​

Answer 1

Step-by-step explanation:

tan ^ -x + tan ^-y= tan ^ -(x+y/1 -xy)

tan^(-x) = π- tan (x)