Koordinat kutub (4,60°)kedalam koordinat cartesius

Bab Trigonometri
Matematika SMA Kelas X

koordinat cartesius
x = r . cos α
x = 4 . cos 60°
x = 4 . 1/2
x = 2

y = r . sin α
y = 4 . sin 60°
y = 4 . 1/2 √3
y = 2√3

(x,y) = (2, 2√3)