The particle travels clockwise. And if the particle travels in the
opposite direction around the circle, the parametric equations are
\(x= cos t, y= sin t\).
Calculation:
The particle travels clockwise. For example at \(t = 0\) the particle is at
the point (0, 1), but at the time \(t = \frac{\pi}{2}\) the particle has move to the
point (1, 0) in a clockwise direction. The parametric equations
when the particle travels in the opposite direction. The parametric
equations will be exchanged that are, \(x = cos t, y = sin t\).
Conclusion:
Hence, the particle travels clockwise. And if the particle travels in
the opposite direction around the circle, the parametric equations
are \(x= cos t, y = sin t\).