Question

Koordinat kutub titik A ( 4,150° ). maka koordinat cartesiusnya adalah

Answer 1

A(4, 150)
r = 4
a = 150

x = r cos a
x = 4. cos 150 = 4.(-1/2√3) = -2√3

y = r sin a
y = 4 sin 150 = 4. 1/2 = 2

A(-2√3, 2)