Question

Please help: Eliminate the parameter.
x = 3 cos t, y = 3 sin t

Answer 1

x^2=9(cosx)^2
y^2=9(sinx)^2
x^2+y^2=9(cos)^2+9(sinx)^2
x^2+y^2=9

Answer 2

(cosx)^2+(sinx)^2=1

Answer 3

you have a circle

Answer 4

Thanks kitty, so helpful. i might need help on a different type of question soon...