Beam deflection at corner through centroid?

Sometimes the term centroid throws me for a loop.  So, how would I set this problem up?

I'm asked to determine the deflection of the tip of a beam for a 2000N load.  The section is rotated 15 degrees.  The load application point is through the centroid of section.  Another way to describe the picture is that the beam is cocked to one side by 15 degrees and the load almost at one corner [maybe width*cos(15)] aiming to the diagonal corner.  


Given load=2000N, on the tip of a 1m beam.  Beam dimensions are H=80mm B=W=40mm and t=thickness of 1.5mm.