Find a rectangular equation for the plane curve defined by the parametric equations.x = 3 sin t, y = 3 cos t; 0 ? t ? 2?
A. x2 + y2 = 9; for x in -3 ? x ? 3
B. y = 
= 9; for x in -? < x < ?
C. y = x2 - 9; for x in -2 ? x ? 2
D. y2 - x2 = 9; for x in -? < x < ?
Answer: A
Mathematics
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