1. The problem statement, all variables and given/known data r = 4sec(θ) 2. Relevant equations x2 + y2 = r2 y = rsin(θ) x = rcos(θ) 3. The attempt at a solution Given that r = 4sec(θ), I replaced sec(θ) with 1/cos(θ) and got x = 4. The problem is that I'm not sure if that's the final answer because I have been unable to find r, y or θ.