From the top A of a vertical wall A B of height 30 m, the angles of depression of the top P and bottom Q of a vertical tower P Q are 15^° and 60^°…

From the top $\displaystyle A$ of a vertical wall $\displaystyle A B$ of height $\displaystyle 30$ m , the angles of depression of the top $\displaystyle P$ and bottom $\displaystyle Q$ of a vertical tower $\displaystyle P Q$ are $\displaystyle 15^{\circ}$ and $\displaystyle 60^{\circ}$ respectively, $\displaystyle B$ and $\displaystyle Q$ are on the same horizontal level. If $\displaystyle C$ is a point on $\displaystyle A B$ such that $\displaystyle C B=P Q$, then the area (in $\displaystyle \mathrm{m}^2$ ) of the quadrilateral BCPQ is equal to