Question

An airplane flying at 3000 m above the ground passes vertically above another plane at an instant when the angle of elevation of the two planes from the same point on the ground are ${60}^{\circ }$ and ${45}^{\circ }$ respectively. The height of the lower plane from the ground is:

• A. $1000\sqrt{3}m$
• B. $\frac{1000}{\sqrt{3}}m$
• C. $500m$
• D. $1500(\sqrt{3}+1)m$

Answer 1

The correct option is A $1000\sqrt{3}m$

Option (A) is the correct answer. Check the video for the approach.