I'm kind of stuck on this problem. The problem given is cos^{2}(t)y' + 4y = 5 , where y(0) = 6

So what I got are no where near the choices give.

When I Plug in y(0)=6, I get C = 6....

The choices for the answers are

y(t) = 4+2e^{tan(t)}

y(t) = 4+2e^{-tan(t)}