Asked by Anna

(a) Modifying the parametric equations of a unit circle, find parametric equations for the ellipse:

x^2/a^2 + y^2/b^2 = 1

(b) Eliminate the parameter to find a Cartesian equation of the curve

x=2sint; y=4+cost; t >(or equal to) 0
Answered by drwls
(a) x = a sint y = b cost

(b) (x)^2/4 + (y-4)^2 = 1
Answered by julia
can you explain how you got both answers?
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