For each of the followings angles (in radian measure), find the sin of the angle (your answer cannot contain trig functions, it must be an arithmetic expression or number):

$\frac { \pi } {6}$
$\frac { \pi } {4}$
$\frac {\pi } {3}$
$\frac {\pi } {2}$
$\pi$
$2\pi$