Two poles p metres apast- Prove that the height of the point of intersection of the lines joining the of each pote to the foot of the opposite pole is given - b y frac - a b - - a - b - - metres

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Two poles p metres apast. Prove that the height of the point of intersection of the lines joining the top of each pote to the foot of the opposite pole is given \( b y \frac { a b } { a + b } \) metres

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