For (1+tanx)/((1+tan^2x)(cosx)) = Asinx+Bcosx, find A+B

[KingAce]

I am also having trouble with this problem. My reasons having trouble with my lessons are posted in the previous post by me. Thank you.

Problem: the expression (1+tanx)/((1+tan^2x)(cosx)) can be simplified to the form Asinx + Bcosx.

What's the value of A+B?

 

[tkhunny]

Again, where's that cheat sheet?

This one (1+tan^2x) should jump out at you.