(a)
\The angle is .
.
The angle is negative angle.
Negative angles are generated by clock wise rotation.
\ to
is quadrant IV.
to
is quadrant III.
to
is quadrant II.
to
is quadrant I.
The angle is between
and
.
The angle is in Quadrant III.
(b).
\The angle is .
The angle is between
and
.
So it is in quadrant I.
(a) The angle is in Quadrant III.
(b) The angle is in Quadrant I.