From a window of one building,the angle of depression to the base of the second building is 29°30'.If the building are 200 m apart,How high is the second building?

Answer 1

Impossible to say how high the 2nd building is, since all we have is a sight line to its base.

All we really know is that the height h of the window can be found using
h/200 = tan 29°30'