Sketch 11pi/6 in standard position

Refer to the diagram shown below.

In quadrant 1, the angle changes from 0 to π/2 radians.

In quadrant 2, the angle changes from π/2 to π radians.

In quadrant 3, the angle changes from π to (3/2) π radians.

In quadrant 4, the angle changes from (3/2) π to 2π radians.

Note that angles are measured counterclockwise from the positive x-axis.

Because (11/6) π lies between π and (3/2) π, the angle is in the quadrant 3.