Question

There is an electric bulb at 7.5m high on a pole.A man of height 1.5m is standing at a distance 9m from the pole.Find the length of his shadow.​

Answer 1

Step-by-step explanation:

Given, OM=15 m

Let h be the height of the tower.

Therefore, 15h=tan30∘

⇒ONh=tan60∘

⇒tan60∘tan30∘=15h×hON

⇒31⋅31=15ON

⇒ON=15÷3=5

Thus length of the shadow is 5 m.