Question

Please help one question that i do not understand:

Eliminate the parameter: x = 5 cos t, y = 5 sin t
Please include steps

Answer 1

I got this answer however i believe the final answer has to include an x. Please help?
x ^2 + y^2
= (5cos t )^2 + (5sin t)^2
= 5^2 cos^2 + 5^2 sin^2 t
= 5^2 ( cos^2 t + sin^2 t )
= 5^2 * 1

Answer 2

I believe the final answer has to be y = something with an x on this side as well