Writing Parametric Equations - Video Tutorials & Practice Problems

Write parametric equations for the rectangular equation below.

$x^2+y^2=25$

• A. $x=25\sin t$; $y=25\cos t$
• B. $x=25\cos t$; $y=25\sin t$
• C. $x=5\sin t$; $y=5\cos t$
• D. $x=5\cos t$; $y=5\sin t$