Thread: Conic Sections and polar coordinates

Hello

I'm stuck on this question Word for word from the text
"A.) decide whether the equation

represents a parabola an elipse or a hyberbola
b.) show that the graph of the equation in part A is the line

my problem is that I cannot find the angle, in all the othe questions the angle worked out to be a special triangle but in this one I have tried applying but I get an angle of 1/3
any help would be appreciated

B= 6, A= 9 and C= 1? so . arctan(3/4) is about .6435 radians so that is, indeed, approximately 1/3 radian. What's wrong with that?