Step 1:
\The parametric equations are and
and
.
Consider .
Similarly .
Trigonometric identity : .
Substitute and
in the above identity.
The above equation is in form of general form of ellipse.
\So the particle moves in elliptical path.
\Draw a table for different values of ranging from
.
Determine the direction of the curve.
\![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
Step 2:
\Graph
\(1) Draw the coordinate plane.
\(2) Plot the points obtained in the table.
\(3) Determine the directions of the curve.
\Observe the graph:
\From to
, the ellipse completes it first revolution in clockwise.
Similarly the ellipse completes it second and third revolution at and
.
The motion of the particle is clockwise.
\Solution:
\The motion of the particle is clockwise.
\