Choices:
(4 square root 2, 135°), (4 square root 2, 315°)
(4 square root 2, 45°), (4 square root 2, 225°)
(4 square root 2, 315°), (4 square root 2, 135°)
(4 square root 2, 225°), (4 square root 2, 45°)
1 Answer

r = sqrt(x^2+y^2)
r = +/ sqrt(4^2+4^2) = sqrt(32) = +/4sqrt(2)
theta = tan^1(1/1) = tan^1(1) = 45 degrees
tan is positive in quadrant I and III
In quadrant III, the angle is 180+45 = 225
(4 square root 2, 225°), (4 square root 2, 45°)