Transform to cylindrical coordinates:
Doesn't look like a problem at all first...
.. after all I know that is a circle (2d) and we can forget the z-axis (=0) and transform it to just polar coords.
Also I know, that for polar coordinates
x = r cos[tex]\theta[/tex]
y = r sin[tex]\theta[/tex]
The Attempt at a Solution
But I don't know how to put it out as an answer. Am I supposed to give a parametric equation in terms of x=... and y=... or should it be like r=... and [tex]\theta[/tex]=... and z=0 or can I express it without parametres?