The value of $2\sin\frac{\pi}{22}\sin\frac{3\pi}{22}\sin\frac{5\pi}{22}\sin\frac{7\pi}{22}\sin\frac{9\pi}{22}$ is equal to: (1) $\frac{1}{16}$ (2) $\frac{5}{16}$ (3) $\frac{7}{16}$ (4) $\frac{3}{16}$
The value of $2\sin\frac{\pi}{22}\sin\frac{3\pi}{22}\sin\frac{5\pi}{22}\sin\frac{7\pi}{22}\sin\frac{9\pi}{22}$ is equal to:\\
(1) $\frac{1}{16}$\\
(2) $\frac{5}{16}$\\
(3) $\frac{7}{16}$\\
(4) $\frac{3}{16}$