cos(2tan^-1(x)) | cos(2arctan x)

In this video, we will learn to find the value of cosine of 2 times inverse of tangent of x. It can also be said as to find the value of cosine of 2 times arctangent of x. As inverse of tangent is also known as arctangent. In this video, I have applied the trigonometric identity cos 2x = (1 – tan^2 x)/(1 + tan^2(x)). The URL of the video explaining the proof of this trigonometric is given below. https://youtu.be/BPUdRLfzajc Other topics of video are: Value of cos(2 tan^-1(x)) How to find the value of cos(2 tan^-1(x))? What is the value of cos(2 tan^-1(x))? Value of cos(2 arctan x) How to find the value of cos(2 arctan x)? What is the value of cos(2 arctan x)? Proof of cos(2tan^-1(x)) = (1 - x^2)/(1 + x^2) To prove cos(2tan^-1(x)) = (1 - x^2)/(1 + x^2) How to prove cos(2tan^-1(x)) = (1 - x^2)/(1 + x^2)? Proof of cos(2tan^-1(x)) = (1 - x^2)/(1 + x^2) To prove cos(2tan^-1(x)) = (1 - x^2)/(1 + x^2) How to prove cos(2tan^-1(x)) = (1 - x^2)/(1 + x^2)? #arctangent #arccosine You can email me at raviranjans@gmail.com You can follow me on facebook. My facebook account is https://www.facebook.com/raviranjankumar.cosgh.73