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**Find the tangent lines at the pole r = sin5o, [0,pi] (note: o represents theta)**

Equation: dy/dx = [f'(o)sino + f(o)coso]/[f'(o)coso - f(o)sino]

f(o) = sin5o

f'(o) = 5cos5o

plugging everything in we eventuate at:

dy/dx = [5*sino*coso + coso*sin5o]/[5cos5o*coso - sin5o*sino]

I'm stuck at this point. Any clue as to how i can advance?