Hasil dari P(-4,4√3)=

P(-4,4√3) ---> kuadran 2

r = √((-4)² + (4√3)²)
r = √(16 + 48)
r = 8

tan a = y/x = 4√3 /-4
tan a = -√3 kuadran 2
a = 120°

Koordinat kutub dr P(-4,4√3) = P(8,120°)