Nyatakan titik B(4, 5phi/6) dalam koordinat kartesius

KOordinat kartesius
B(4, 5π/6) = (4, 150°)


x = 4 cos 150 = 4 . cos(180-30)
x= 4. (- cos 30)
x = 4 . (¹/₂ √3) = 2√3

y = 4 sin 150 = 4. sin (180-30)
y = 4. sin 30
y = 4 . ¹/₂ = 2

kartesius = (x,y)= ( 2√3, 2)