I am fairly familiar with contour maps in the form f(x,y).

But there is this problem:

f(r,theta) = 1+sin(theta)-r with z = 1,3/4,1/2,1/4,0.

I was thinking about transforming that into rectangular coordinates and somehow solve it that way, but even so, I do not know how to convert that.

i TRIED to convert it and got y = root [(z-sin(theta)-1)^2-x^2]. If that is correct. how would I even map that?

Pleaseee help