The equation for the parabola is
x^2-2xy+y^2-2sqrt(2)x-2sqrt(2)y=0
I know I have to use cot2θ= (A-C)/B
But then I get cot2θ= (1-1)/-2 = 0
I know what to do if I got an actual value, but I'm stuck since it's 0.
I would really appreciate any help.