Question

Which functions of x and y in terms of time t can be derived from this rectangular equation?
x^2/4 + y^2 = 1

A) x = 2sin t, y = -cos t
B) x = sin t, y = 5cos t
C) x = sin t, y = 2cos t
D) x = -sin t, y = 2cos t
E) x = 2sin t, y = 5cos t

Answer 1

@welshfella

Answer 2

@Michele_Laino

Answer 3

@amistre64

Answer 4

@Luigi0210