Ubahlah koordinat kutub berikut A. P (8,30°) B. A (4√3,4)

A. P (8,30°), r = 8 dan O = 30°
x = r cos O = 8 cos30 = 8(1/2)√3 = 4√3
y = r sin ) = 8 sin30 = 8(1/2) = 4
(x, y) = (4√3, 4)

B. A (4√3,4)
r = √((4√3)² + 4²) = 8
tan O = y/x = 4/(4√3) = 1/√3 = (1/3)√3
O = 30°
(r, O) = (8, 30°)