Dear somanyquestions,
Please refer to the attached drawing.
Therefore, x=117.57
Height of the tall building=x+28=145.57m
Hope this will help you.
The angle of elevation from the top of a small building to the top of a nearby taller building is 46°40', while the angle of depression to the bottom is 14°10'. If the smaller building is 28 meters high, find the height of the taller building.