P (4,30 derajat) ubah dalam koordinat cartesius

koordinat kartesius (x,y)

[tex]x = r.cos \: a \\ = 4.cos \: 30 \\ = 4. \frac{1}{2} \sqrt{3} \\ = 2 \sqrt{3} [/tex]
[tex]y = r.sin \: a \\ = 4.sin \: 30 \\ = 4. \frac{1}{2} \\ = 2[/tex]