1.

Two points P and Q are at the distance of x and y (where y > x) respectively from the base of a building and on a straight line. If the angles of elevation of the top of the building from points P and Q are complementary, then what is the height of the building?

A. xy
B. √(y/x)
C. √(x/y)
D. √(xy)
Answer» E.


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