question_answer

The angles of elevation of the tops of two pillars of height h and 2h from a point on the line joining the feet of the two pillars are complementary. lf the distances of the feet of the pillars from that point are x and y respectively, find the value of 2h2.

A) \[{{x}^{2}}y\]                    

B)        \[x{{y}^{2}}\]

C) \[xy\]                   

D)        \[{{x}^{2}}{{y}^{2}}\]

Correct Answer: C

Solution :

\[\Rightarrow \]and\[L.C.M.=\frac{140\times 605}{11}=7700\] Multiplying the two equations, we get \[\text{1}00\text{1}=\text{91}\times \text{1}0+\text{91}\]or \[\text{91}0=\text{91}\times \text{1}0+0\]