Verify sec x + tan x = 1/(sec x - tan x)

In this video, we will learn to verify the trigonometry identity sec x + tan x = 1/(sec x - tan x).

Verification of the identity tan^2 x + 1 = sec^2 x has been explained in the following video

Other titles for the video are:
Prove sec x + tan x = 1/(sec x - tan x)
sec theta + tan theta = 1/(sec theta - tan theta)
Prove the equation sec x + tan x = 1/(sec x - tan x)

I, Ravi Ranjan Kumar Singh, have produced this video. All credits of this video belong to me.