$\sin \left(\frac{\pi}{2^{4}}\right)$ এর মান-

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

$\frac{1}{4} \sqrt{2-\sqrt{2+\sqrt{2}}}$

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

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

$\text { None }$