Integrate the function $\frac{\sin x}{(1+\cos x)^2}$

Question

$\begin{array}{1 1} \frac{1}{1+\cos x}+c \\ \large \frac{1}{1-\cos x}+c \\\large \frac{\sin x}{1+\cos x}+c \\ \large \frac{2}{1+\cos x}+c\end{array}$