Question

tan2○= 2tan○/1-tan^2○​

Answer 1

Step-by-step explanation:

tan2x=2tanA/1-tan²x

we know

tan(x+y)=tanx+tany/1-tanxtany

replace y by x

tan(x+x)=tanx+tanx/1-tanxtanx

tan2x=2tanx/1-tan²x