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A plane flies (in still air) at 250 mi/hr. On Monday morning the plane leaves point A and flies due East for one hour and then flies due south for one hour to arrive at B. Throughout the wind velocity is 50 mi/hr to the east

a) What is the distance from B to A?

b) What is the heading (the direction the plane must point in) that the plane must fly to return to B?

c) How long would it take for the return flight?

I drew a nice little picture and figured out when it is flying east it will be flying 300 mi/hr with the wind, but I forget what to do when he is flying south and the wind is east. Any help would be greatly appreciated!