A man crosses a river from point A. If he swims perpendicular to the bank, he reaches point 'C' in 10 minutes later. If he swims at angle alfa to AB, he reaches B in 12.5 minutes,Find the direction of the boat with the vertical.
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A man crosses a river from point A. If he swims perpendicular to the
bank, he reaches point C' in 10 minutes later. If he swims at angle a to
AB, he reaches B in 12.5 minutes,
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