Question

Check my work and answer??
Parametic Equations

Answer 1

Eliminate the parameter.
x = 4 cos t, y = 4 sin t

Answer 2

x^2 = 16 cos^2 t
y^2 = 16 sin^2 t

x^2 + y^2 = 16 cos^2 t + 16 sin^2 t
x^2 + y^2 = 16 (cos^2 t + sin^2 t)
x^2 + y^2 = 16(1)

x^2 + y^2 = 16

Answer 3

yep

Answer 4

Thank you!!