Hello again, guys. I need to prove the following identity:
After fiddling around with this for an hour and getting nowhere, I decided to bring it here for help. None of the identities I'm using seem to be of much help.
Thanks a bunch!
tan θ * cot θ = 1 (Right?)
sin^2(θ) + cos^2(θ) = 1
I suppose the other two relations you're talking about are:
1 + tan^2(θ) = sec^2(θ)
and
1 + cot^2(θ) = csc^2(θ)
This seems interesting, but I'm not putting this together for the complete picture.
Okay, so now I have:
tan^2(θ) - cot^2(θ) = sec^2(θ) - cos^2(θ)
I'm not sure where to go from here.