The horizontal distance between two towers is `60` metres. The angle of depression of the top of the
Channel: Doubtnut
Date: 2020-01-03

The horizontal distance between two towers is `60` metres. The angle of depression of the top of the first tower when seen from the top of the second tower is `30^(@)` . If the height of the second tower is `90`metres. Find the height of the first tower. [Use `sqrt(3)= 1.732`]