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Problem
Problem
If
x
sin
3
θ
+
y
cos
3
θ
=
sin
θ
cos
θ
x \sin^3 \theta + y \cos^3 \theta = \sin \theta \cos \theta
x
sin
3
θ
+
y
cos
3
θ
=
sin
θ
cos
θ
and
x
sin
θ
−
y
cos
θ
=
0
x \sin \theta - y \cos \theta = 0
x
sin
θ
−
y
cos
θ
=
0
then
(
x
,
y
)
(x, y)
(
x
,
y
)
lie on a. a circle b. a parabola c. an ellipse d. a hyperbola
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