JEE MAIN - Mathematics Hindi (2016 - 10th April Morning Slot - No. 22)

$$\lim\limits_{x \rightarrow 0} \frac{(1-\cos 2 x)^{2}}{2 x \tan x-x \tan 2 x}$$ बराबर है :

$$-2$$

$$-\frac{1}{2}$$