The parametric equations are
and
.
Simiplify the equation.
\
and
.


Trignometric identity :
.
Substitute
and
in
.

.
The rectangular form of equation is
.
Find the points on the graph of the function.
\Substitute
in
.

Substitute
in
.

At
and
, then
and
.
Substitute
in
.

Substitute
in
.

At
and
, then
and
.
Graph:
\Graph the parametric equations is
and
.
Plot the points.
\
.
The parametric equations is 
Graph of the parametric equations is
and
.
.