Question 228740
Multiply the magnitute times magnitude = 2*4.


Add the angles:  10 + 20 = 30 degrees.


=8 (cos 30 degrees + i sin 30 degrees)
={{{8 ((sqrt(3))/2 + i*(1/2))}}}
={{{4(sqrt(3) + i)}}}



Dr. Robert J. Rapalje