Posted by reshma on Monday, February 21, 2011 at 7:49am.
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

GEOMETRY  Reiny, Monday, February 21, 2011 at 8:33am
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