MCQ
A balloon moving in a straight line passes vertically above two points $A$ and $B$ on horizontal plane $1000$ ft apart. When above $A$ it has an altitude of $60^\circ$ as seen from $B$. When above $B$ it has an altitude of $45^\circ$ as seen from $A$. The distance of $B$ from the point at which it will touch the plane is :
- ✓$500(\sqrt{3}+1)\text{ft}$
- B$1500\text{ ft}$
- C$500(3+\sqrt{3})\text{ ft}$
- D$500\text{ ft}$
