- #1

whkoh

- 29

- 0

[tex]\sec x + \tan x = \tan \left (\frac{\pi}{4} + \frac{x}{2}\right )[/tex]

I've got to

[tex]\sec x + \tan x = \frac{1+\sin x}{\cos x}[/tex]

and then I was stuck. Tried half angle but it didn't seem to work.

Help please.