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Mathematics
Mathematics
Problem
Show that the curve with parametric equations
x
=
t
cos
t
x = t \cos t
x
=
t
cos
t
,
y
=
t
sin
t
y = t \sin t
y
=
t
sin
t
,
z
=
t
z = t
z
=
t
lies on the cone
z
2
=
x
2
+
y
2
z^2 = x^2 + y^2
z
2
=
x
2
+
y
2
, and use this fact to help sketch the curve.
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