1. Find the polar coordinates of (8, –8) for r > 0.

Question

2.Find the rectangular coordinates of (9, 150°)

Answer 1

(r,θ) = (8√2,315°) or ((8√2,-45°)
(x,y) = (9cos150°,9sin150°) = (-9/2, 9/2 √3)

Answer 2

dang - gotta stop typing too fast:
(x,y) = (9cos150°,9sin150°) = (-9/2 √3, 9/2)