Which of the following is not a fifth root of -1?

a.) cos 36°+ i sin 36°
b.) cos 252°+ i sin 252°
c.) cos 108°+ i sin 108°
d.) cos 180°+ i sin 180°
e.) cos 244°+ i sin 244°
f.) cos 324°+ i sin 324°

the one that's not a multiple of 36