Question

Eliminate the parameter t from the equations
x=20t/(4+t^2) and y= 5(4-t^2)/(4+t^2)
and identify the curve
in the Cartesian form.
circle​

Answer 1

Eliminate the parameter t from the equations

x=20t/(4+t^2) and y= 5(4-t^2)/(4+t^2)

and identify the curve

in the Cartesian form.

circle