Question

Koordinat cartesius dari titik r(10,240 derajat)

Answer 1

R = 10
a = 240° (dikuadran 3)
y = r sin a = 10 . sin 240° = 10 . -1/2 √3 = -5√3
x = r cos a = 10 . cos 240° = 10 . -1/2 = -5
(x,y) = (-5, -5√3)