Convert 270°270°270° to radians. (Note: π rad=180°\pi \text{ rad} = 180°π rad=180°)
3π2\frac{3\pi}{2}23π rad
3π4\frac{3\pi}{4}43π rad
5π4\frac{5\pi}{4}45π rad
2π3\frac{2\pi}{3}32π rad