1. The problem statement, all variables and given/known data Represent the surface in space, identify the surface- r=2cos(theta) 2. Relevant equations Uhh.... 3. The attempt at a solution My main thing here is this... how does r tell me anything about the graph of the function in a 3-D plane? i see that r=2cos(theta) but what does it tell me?? i know that 2cos(theta) = cos^2(t)-sin^2(t), so r= that... now what>??? im honestly stumped here, thats really as far as i can go with what i know.