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Mathematics
Mathematics
Problem
Explain why the polar curve
r
=
3
cos
θ
r = 3\cos\theta
r
=
3
cos
θ
represents a circle of radius
3
2
\tfrac{3}{2}
2
3
centered at
(
3
2
,
0
)
\left(\tfrac{3}{2},0\right)
(
2
3
,
0
)
in the Cartesian plane.
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