An angle is drawn on a set of equally spaced parallel lines as shown. The ratio of the area of shaded region $$\mathcal{C}$$ to the area of shaded region $$\mathcal{B}$$ is 11/5. Find the ratio of shaded region $$\mathcal{D}$$ to the area of shaded region $$\mathcal{A}.$$

(第二十四届AIME1 2006 第7题)