Question

2tan 30° upon 1+tan^2 30° =
(1) sin 60°
(2) cos 60°
(3)tan60°
(4)sin 30°​

Answer 1

Answer:

w. k. t. tan2A= 2tanA/1+tan^2A

so 2tan 30°/ 1+tan^2 30° = tan 60°

i. e. option 3