Assuming you mean (1/1+sin 0)+(1/1-sin 0), then we have to first remember that the sin of 0 is 0. The expression would now be (1/1+0)+(1/1-0), which is also just (1/1)+(1/1) or 1+1. This comes out to 2, so the expression can be evaluated as 2.
It is four. So two and two you add them together to be four. Good job. Your learning :)
Area = length*width
Width = area/length
width = (65 1/4 in^2)/(9 2/3 in)
width = 6 3/4 inches
Hope this helps :)