Question

If cot θ = cos θ / sin θ , then tan 2 θ = __________ .

Answer 1

=sin 2 theta / cos 2 theta.
= 2 tan theta/1- (tan theta)^2

Answer 2

\[\tan 2 \theta=\frac{ 2\tan \theta }{ 1-\tan ^2 \theta }\]