1.

The angles of elevation of the top of from two points P and Q at distance $${{m^2}}$$ and $${{n^2}}$$ respectively, from the base and in the same straight line with it are complementary. The height of the tower is-

A. ${\left( {mn} \right)^{\frac{1}{2}}}$$
B. $m{n^{\frac{1}{2}}}$$
C. ${m^{\frac{1}{2}}}n$$
D. $mn$$
Answer» E.


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