Question 1204424
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Law of Sines
sin(A)/a = sin(B)/b
sin(A) = a*sin(B)/b
sin(A) = 23*sin(28)/9
sin(A) = 1.19976 approximately


At this point we can stop. 
There aren't any real number solutions because the range of y = sin(x) is {{{-1 <= y <= 1}}}
The largest sin(A) can get is sin(A) = 1.


Therefore, a triangle is <u><font size=4 color=red>not</font></u> possible.
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