15.-2 points ZlEngMaths 17.2.027. My Notes Use wx = 1/n cos(0+2kr) + ism(0+2)], where к= 0, 1, 2, -1, to compute all roots. (Write your answers in the form a+b. Enter your answers as a comma- separated list.) (8)A/ Sketch these roots on an appropriate circle centered at the origin. eBook Ө Ө