The equation is
.


Compare the polar equation with
.
Here
and
.
Substitute
in
.


Since
, the conic is hyperbola.
Directrix is perpendicular to the polar axis at a distance
right to the pole.
The directrix is
.
Construct a table for different values of
.
| \
| \
\
| \
\
| \
\
| \
\
| \
| \
| \
\
| \
\
| \
\
| \
\
| \
The vertices are
and
.
The center of the hyperbola is mid point of the vertices is
.
Graph:
\(1) Graph the polar co-ordinates.
\(2) Plot the points.
\(3) Connect the points to a smooth curve.
\
The conic is hyperbola.
\The directrix is
.
The vertices are
and
.
The center is at
.
.