The point in rectangular coordinates is and interval is
.
Find pair of points in polar coordinates.
\Coversion formula : and
.
Find .
Substitute in the conversion formula of polar coordinates.
Find .
Since and
,then
.
.
The point in polar coordinate is .
Find the second pair of polar coordinate.
\One set of polar coordinates is .
Another representation that uses a negative -value is
or
The point in polar coordinate is .
Pair of polar points are and
.