1.If xn=cosπ2n+isinπ2nx_n = \cos \frac{\pi}{2^n} + i \sin \frac{\pi}{2^n}xn=cos2nπ+isin2nπ, then ∏n=1∞xn\prod_{n=1}^{\infty} x_n∏n=1∞xn is equal toa.−1-1−1b.111c.12\frac{1}{\sqrt{2}}21d.i2\frac{i}{\sqrt{2}}2iLogin to continueOnly logged in users canattempt or see the solution.
