Your working looks fine and I get the same answer. It's probably just undefined
Need help having trouble with this question....
a) Find gradient at the point where theta=pi
b) Hence find the cartesian co-ordinates
c) Find equations of the tangent and normal at this point.
My workings
a)
as tan pi = 0, i will get an undefined answer is so how can i do the following parts? :s can someone please help me out
And yes Theta=Pi heres the original question, Question 3 here [/URL]