Solve for x (1-tan(x)^2)/(1+tan(x)^2)=cos(2x)

Solve for x (1-tan(x)^2)/(1+tan(x)^2)=cos(2x)
Do you know how to Solve for x (1-tan(x)^2)/(1+tan(x)^2)=cos(2x)? If not, you can write to our math experts in our application. The best solution for your task you can find above on this page.