1. ## complete identity

sin^2A-1/sinA+1 = ?

I'm so confused. Is it cos^2A?
Thanks much.

2. Originally Posted by daydreembelievr
sin^2A-1/sinA+1 = ?

I'm so confused. Is it cos^2A?
Thanks much.
Use brackets so we don't have to guess at what you question really is.

$\frac{\sin^2(A)-1}{\sin(A)+1}=\frac{(\sin(A)+1)(\sin(A)-1)}{\sin(A)+1}$

does that help?

CB

3. ## wow

obviously. i was trying to make that so difficult. I was plugging in cos and everything else imaginable. thanks so much for the help.