koordinat kutub k(6,150°) jika diubah kedalam koordinat kartesius menjadi

r = 6 dan A = 150°
x = r cosA = 6 cos150 = 6(-cos30) = 6((1/2)√3) = 3√3
y = r sinA = 6 sin150 = 5 sin30 = 6(1/2) = 3
(x, y) = (3√3, 3)