Question

If X is the tangent of an angle A then tan(2A) is equal to

Answer 1

Answer:

$\frac{2x}{1 - {x}^{2} }$

Step-by-step explanation:

$\tan(a) = x \\ \\ \\ \tan(2a) = \frac{2 \tan(a) }{1 - { \tan(a) }^{2} } \\ \\ = \frac{2x}{1 - {x}^{2} }$