Find a rectangular equation for the plane curve defined by the parametric equations.x = 6 sin t, y = 6 cos t; 0 ? t ? 2?
A. x2 + y2 = 36; for x in -6 ? x ? 6
B. y2 - x2 = 36; for x in -? < x < ?
C. y = x2 - 9; for x in -2 ? x ? 2
D. y = 
= 36; for x in -? < x < ?
Answer: A
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