Eliminate the parameter to obtain a Cartesian equation of the curve.x = 2 sin t, y = 2 cos t, 0 ? t ? 2?

A. x2 + y2 = 4-2 ? x ? 2
B. = x2 - 9, -? x ? 2
C. y2 - x2 = 4-? < x < ?
D. =  = 4-? < x < ?


Answer: A

Mathematics

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