Math question bout angles help pleaseee

Question

from her condominiums rooftop swimming pool lynn sees her boyfriend washing windows on another building she sees him at a 25 angle of elevation she also sees the bottom of the building at a 45 angle of depression knowing that her boyfriend is working at a building bout half kilometer away determine how high above the ground her boyfriend is include a labelled diagram round your answer to the nearest meter

Answer 1

Like the problem states: include a labeled diagram!

The bottom triangle is isosceles, so the height of the sight line is 500 m.

The distance of the boyfriend above the sight line is given by 

d / 500 = tan 25°