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starting point does the Bual Teacl ipp47. A swimmer wishes to cross a 500 m wide river flowingat 5 km/h. His speed with respect to water is 3 k(a) If he heads in a direction making an angle θ withthe flow, find the time he takes to cross the river.(b) Find the shortest possible time to cross the river.5tho nrevious nroblem. The man

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