Can someone explain to me how you can go from
$\displaystyle (\frac{cosx+sinx}{cosx})(\frac{cosx}{1}) $
to
$\displaystyle =cosx+sinx $
I thought it would be (sinx)(cosx), so I must not understand something!
Thanks!
Hello, whit221!
Can someone explain to me how you can go
. . from $\displaystyle \frac{\cos x+\sin x}{\cos x}\cdot\frac{\cos x}{1}$ to $\displaystyle \cos x+\sin x$
I thought it would be $\displaystyle \sin x\cos x$
Did you do something really silly?
. . $\displaystyle \frac{{\color{red}\rlap{////}}\cos x + \sin x}{{\color{red}\rlap{////}}{\cos x}}\cdot \dfrac{\cos x}{1} \;=\;\sin x\cos x$