/sin(z)\ lim |------| z->0+| pi| |z - --| \ 2 /
Limit(sin(z)/(z - pi/2), z, 0)
0
= 4.92671139733264e-33
/sin(z)\ lim |------| z->0-| pi| |z - --| \ 2 /
= 1.709521777892e-30
4.92671139733264e-33