Albert lives in the southern US At noon on a summer day the

Albert lives in the southern US. At noon on a summer day, the angle of elevation of the sun is 83.5 degree. The window in Albert\'s room is 4.0 feet high and 6.5 feet wide and the wall is 6 inches thick. Determine the area of the floor surface in Albert\'s room that is illuminated by the sun.

Solution

the broadness of light falling on floor = 4cot(83.5) - 0.5 = 0.044257567. so the sunlight will not be able to reach the floor . it will strike on the thick wall only and not the floor. so no any area of room floor will be illuminated by sunlight