(Answered) Question in searching the bottom of a pool at night a

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Question: In searching the bottom of a pool at night, a watchman shines a narrow beam of light from his flashlight, h = 1.9 m above the water level, onto the surface of the water at a point L = 2.9 m from the edge of the pool. Where does the spot of light hit the bottom of the pool, measured from the wall beneath his feet, if the pool is 2.1 m deep?

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