koordinat kutub dari P(√3,-1) adalah....

P(√3, -1) = (x, y) => dikuadran IV
r = √(x^2 + y^2) = √(√3^2 + (-1)^2) = √(3 + 1) = √4 = 2
tan a = y/x = -1/√3 . √3/√3 = -1/3 √3 = tan 330°
=> a = 330°
Koordinat kutub = (r, a) = (2, 330°)