Question 1034335
Draw this and the tangent of the angle, 1.28/1.75, will give the angle east of north.
The value of the fraction is 36.18 degrees, and that is the bearing.
1.75/1.28 is same as 1/x
1.75x=1.28
x=0.731 miles downstream.
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The resultant in the third part is the swimmer's motion.
Now, it is the sine of the angle which is west of north.
That is 1.28/1.75-0.7314
sin(-1) of that is 47 degrees.  The bearing would be 313 degrees or almost exactly northwest.