Problema Solution
when the sun's angle of elevations is 57 degrees, a building casts a shadow 21 meters long. how high is the building.
Answer provided by our tutors
as the angle of elevation=57
we can form a rigt angle triangle with height as building height and base as showdow.
tan(57)=height/showdow=>height=showd*tan57=32.33 meter(ans)