If the elevation angle of a camera situated at the top of a pole from a point $20$ metre away from the base of the pole is $60°$, find the height of the pole.

The value of $h$ in the following figure is

The angle of elevation in the given figure is

The angle of depression in the following figure is

As observed from the top of a $100 \mathrm{m}$ high light house from the sea level, the angles of depression of two ships are $30°$ and $45°$. If one ship is exactly behind the other on the same side of the light house, find the distance between the two ships. $[\text{Use} \sqrt{3}=1.732]$