Answer
See explanations.
Work Step by Step
Step 1. The standard form of a conic polar equation is $r=\frac{ed}{1\pm e\cdot cos\theta}$ or $r=\frac{ed}{1\pm e\cdot sin\theta}$.
Step 2. As the focus is at the pole, any point $P(r_p, \theta_p)$ on the curve will have a distance to the pole as $|r_p|$
Step 3. We conclude that the distance from that focus to any point $P(r_p, \theta_p)$ on the conic is $|r_p|$.
