From the top of a building `A B` , 60 m high, the angles of depression of the top and bottom of a vertical lamp post `C D` are observed to be `30o` an
From the top of a building `A B` , 60 m high, the angles of depression of the top and bottom of a vertical lamp post `C D` are observed to be `30o` and `60o` respectively. Find the height of the lamp post.
5 views