3. A swimmer needs to swim from a point on the beach to a floating platform 50 m directly across from the shore. They can
3. A swimmer needs to swim from a point on the beach to a floating platform 50 m directly across from the shore. They can swim at a speed of 4 km/h in calm water. The lake has a 2 km/h current that runs parallel to the shore. If they want to swim straight across to the dock, at what angle should they aim themself upstream before they start swimming? Draw a diagram of the situation
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