Originally Posted by

**hi_mynameisdan** Although I understand some, I've spent the last couple of hours trying to figure these out, and it seems hopeless. If you can explain step by step how one would go about solving these problems so that I can study and remember the methods I will greatly appreciate it!!

Well, here they are.

(tan x + cot x)^2 = sec^2x + csc^2x

(cosx / 1+ sinx) + (1+sinx / cosx) = 2secx

tan x * tan x/2 = sec x-1

1- tan^2x = ( 2tanx / tan2x )

( sin2x / 1+cos2x ) = tan x

Again, any help with the above problems would be great! I'm stressing over this very badly and it kills me that I do not understand it.