I've been trying to solve this for 1hour, but I can't do it. I don't know if I'm missing something or it just doesn't open to me...
Simplify the following expression:
$\frac{\sin^2 x - \cos^2 x}{ \sin x - \cos x}$
Help will be appreciated.
I've been trying to solve this for 1hour, but I can't do it. I don't know if I'm missing something or it just doesn't open to me...
Simplify the following expression:
$\frac{\sin^2 x - \cos^2 x}{ \sin x - \cos x}$
Help will be appreciated.
It's $\sin(x)+\cos(x)$. Follow Mitra's hint!
It might further be simplified to $\sqrt{2}\sin(x + \pi/4)$.