Consider the parametric equations x = cost and y = 2 sint. What is the corresponding equation in coordinate system?
I. x² + 4y² = 4
II. x² - y² = 4
III. 2x- y=16
IV. 4x² + y² = 4
V. x-x²/x+y= 1
Select one:
a. III
b. V
c. IV
d. II
e. I