1.
For z1=1i1+i36z_1 = \sqrt[6]{\frac{1-i}{1+i\sqrt{3}}}, z2=1i3+i6z_2 = \sqrt[6]{\frac{1-i}{\sqrt{3}+i}}, z3=1+i3i6z_3 = \sqrt[6]{\frac{1+i}{\sqrt{3}-i}}, which of the following holds good?