Upgrade subject to access all content

For which values of $x$ on the interval $(0, \pi)$ will the series below converge?

$$\sum _{ n=1 }^{ \infty }{ ( \sin { x } ) ^{ n } } $$

$ (0, \pi)$

$(0,\cfrac{\pi}{2})$ or $(\cfrac{\pi}{2},\pi)$

$ (0, \cfrac{\pi}{2})$

$ (\cfrac{\pi}{2},\pi )$