1.The value of (1+sin2π9+icos2π91+sin2π9−icos2π9)\left(\dfrac{1 + \sin\dfrac{2\pi}{9} + i\cos\dfrac{2\pi}{9}}{1 + \sin\dfrac{2\pi}{9} - i\cos\dfrac{2\pi}{9}}\right)1+sin92π−icos92π1+sin92π+icos92π is:a.12(1−i3)\dfrac{1}{2}(1 - i\sqrt{3})21(1−i3)b.12(3−i)\dfrac{1}{2}(\sqrt{3} - i)21(3−i)c.−12(3−i)-\dfrac{1}{2}(\sqrt{3} - i)−21(3−i)d.−12(1−i3)-\dfrac{1}{2}(1 - i\sqrt{3})−21(1−i3)Login to continueOnly logged in users canattempt or see the solution.
