A bird sits on top of a Lamppost. The angle made by the lamp-post and a line from the feet of the bird to the feet of the Observer standing away from the Lamppost is 55°. the distance from the Lamppost and the Observer is 25 ft. estimate the height of the lamp post
we have that
see the attached figure to better understand the problem
so
tan(55)=h/25
solve for h
h=25(tan(55))
h=35.7 ft