A man can row at 16 km/h, and run at 12 km/h. He needs to get from a point A, on the south bank of a stretch of still water, to point B on the north...

A man can row at 16 km/h, and run at 12 km/h. He needs to get from a point A, on the south bank of a stretch of still water, to point B on the north bank of the water. The direct distance from A to B is 20 km, and the water is 16 km wide. He starts rowing with an angle theta between North and the direction in which he rows. Find an expression for the time T he will take to get from A to B, in terms of theta .