Posted by Kristen on Sunday, February 24, 2008 at 9:45pm.
Eliminate the parameter and write the corresponding rectangular equation. X=2cos theta, y=4sin theta

precalc  Reiny, Sunday, February 24, 2008 at 11:41pm
x/2 = cos theta and y/4 = sin theta
but sin^2 (theta) + cos^2 (theta) = 1
x^2/4 + y^2/16 = 1