(a)
\The parametric equations are
and
.
Find the rectangular equation.
\Consider
.
Squaring on each side.
\
.
Consider
.

Trigonometric identity:
.
Substitute
and
.



The rectangular equation is
.
Graph:
\Graph the parametric equations
and
.
.
Observe the graph:
\The domain of the graph is
.
The orientation is from right to left and curve is smooth and continuous on the interval.
\The range is
.
(b)
\The parametric equations are
and
.
Graph:
\Graph the parametric equations
and
.
.
Observe the graph:
\The domain of the graph is
.
The orientation is from right to left and curve is smooth and continuous on the interval.
\The range is
.
Observe the set of graphs of parametric equations:
\The parametric equations from (a)-(b) are similar and their rectangular equation is
.
The curves are identical in the interval
and it orientation is from right to left.
The parametric equations from (a)-(b) are similar and their rectangular equation is
.
The curves are identical in the interval
and it orientation is from right to left.
(a)
\The domain of the graph is
.
The orientation is from right to left and curve is smooth and continuous on the interval.
\The range is
.
(b)
\The domain of the graph is
.
The orientation is from right to left and curve is smooth and continuous on the interval.
\The range is
.