Divide z1=8(cosfrac5pi6+isinfrac5pi6)z_1 = 8(\\cos \\frac{5\\pi}{6} + i \\sin \\frac{5\\pi}{6})z1=8(cosfrac5pi6+isinfrac5pi6) by z2=2(cosfracpi3+isinfracpi3)z_2 = 2(\\cos \\frac{\\pi}{3} + i \\sin \\frac{\\pi}{3})z2=2(cosfracpi3+isinfracpi3).
4(cosfracpi2+isinfracpi2)=4i4(\\cos \\frac{\\pi}{2} + i \\sin \\frac{\\pi}{2}) = 4i4(cosfracpi2+isinfracpi2)=4i
4(cosfrac2pi3+isinfrac2pi3)4(\\cos \\frac{2\\pi}{3} + i \\sin \\frac{2\\pi}{3})4(cosfrac2pi3+isinfrac2pi3)
10(cosfracpi2+isinfracpi2)10(\\cos \\frac{\\pi}{2} + i \\sin \\frac{\\pi}{2})10(cosfracpi2+isinfracpi2)
4(cospi+isinpi)=−44(\\cos \\pi + i \\sin \\pi) = -44(cospi+isinpi)=−4