posted by reshma .
The present height of the pyramid of Khafre in Egypt is 137m.An engineer surveying pyramid measures an angle of elevation of 33degrees from a point X to the top of the pyramid. Calculate the distance from X to the cenre of the base of the pyramid at Y
Assuming the point X is on ground which is level with the base of the pyramid, this would be just a case of
finding the distance d, where
tan33° = 137/d or
d = 137/tan33° m