Angles of elevation from two points are complementary: height squared = product of the distances

1. A.
   $2h^2 = x^2 y$
2. B.
   $2h^2 = x y^2$
3. C.
   $2h^2 = xy$
4. D.
   $2h^2 = x^2 y^2$

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1. A.
   $pq$
2. B.
   $\sqrt{pq}$
3. C.
   $\frac{pq}{2}$
4. D.
   $\frac{\sqrt{pq}}{2}$

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1. A.
   4 m
2. B.
   5 m
3. C.
   6 m
4. D.
   9 m

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1. A.
   $60^\circ$
2. B.
   $90^\circ$
3. C.
   $120^\circ$
4. D.
   $135^\circ$

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