1.The complex number z=i−1cosπ3+isinπ3z = \dfrac{i - 1}{\cos\dfrac{\pi}{3} + i\sin\dfrac{\pi}{3}}z=cos3π+isin3πi−1 is equal to:a.2i(cos5π12−isin5π12)\sqrt{2}i\left(\cos\dfrac{5\pi}{12} - i\sin\dfrac{5\pi}{12}\right)2i(cos125π−isin125π)b.cosπ12−isinπ12\cos\dfrac{\pi}{12} - i\sin\dfrac{\pi}{12}cos12π−isin12πc.2(cosπ12+isinπ12)\sqrt{2}\left(\cos\dfrac{\pi}{12} + i\sin\dfrac{\pi}{12}\right)2(cos12π+isin12π)d.2(cos5π12+isin5π12)\sqrt{2}\left(\cos\dfrac{5\pi}{12} + i\sin\dfrac{5\pi}{12}\right)2(cos125π+isin125π)Login to continueOnly logged in users canattempt or see the solution.
