71 Express 13 in the form a + bi. Enter the values of a and b (in that order) into the answer box below, separated with a comma.V32 Convert 2 to polar form. For a complex number a + bi, polar form is given by r(cos(0) + i sin(0)), where r = va + 62 and 0 = atan b We have that a = and b = V3 2 V3 Thus, T = + = 1 2 V/3 Also, 0 = atan 2 - TT= 3 1 V3i 2 7T 2 7 Therefore, 2 = COS 2 3 + i sin 3 According to the de Moivre's formula (r (i sin (0) + cos (0)))" = r" (isin (ne) + cos (ne)). So 71 2 TT cos + i sin 3 = 171 COS (71 2 TT + isin (71 3 = 2 71 Therefore V3i V3i 2 = - + 2 V3i 71 V3i Hence, 2 + 2