The horizontal distance between two towers is 60 meters. The angle of depression of the top of the first tower when seen from the top of the second tower is . If the height of the second tower is 90 meters. Find the height of the first tower.

contexto.140

3 years ago

Let be the first tower and be the second tower.

=> and such that and .

Let such that and

In the right , we have:

Height of the first tower