math 10 pure (angles of depression, elevation)

[S.Hobden]

1)From the roof of a building 25m high, the angle of depression to the base of the hotel across the street is 47degs, and the angle of elevation to the top of the hotel is 38degs. If the street is level, how tall is the hotel?

19.53m?

 

[stapel]

19.53m?

If one must look up from twenty-five meters to see the top of the other building, then how can that other building be less than twenty meters tall?

Please reply showing all of your steps and reasoning. Thank you.

Eliz.