JEE MAIN - Mathematics Hindi (2019 - 10th January Evening Slot - No. 16)

$$\cos {\pi \over {{2^2}}}.\cos {\pi \over {{2^3}}}\,.....\cos {\pi \over {{2^{10}}}}.\sin {\pi \over {{2^{10}}}}$$ का मान है -

$${1 \over {256}}$$

$${1 \over {2}}$$

$${1 \over {1024}}$$

$${1 \over {512}}$$