1.One of the complex roots of the equation x11−x6−x5+1=0x^{11} - x^6 - x^5 + 1 = 0x11−x6−x5+1=0 isa.cis3π5\operatorname{cis}\frac{3\pi}{5}cis53πb.cisπ3\operatorname{cis}\frac{\pi}{3}cis3πc.cis5π6\operatorname{cis}\frac{5\pi}{6}cis65πd.cis7π5\operatorname{cis}\frac{7\pi}{5}cis57πLogin to continueOnly logged in users canattempt or see the solution.
