In the diagram below, if the measure of < C = 45 °, and side AB = 9, then side BC = _____.

Given the shown trangle
where the angle C= 45°
Side AB (Opposite) = 9
side BC(Adjacen)= ?
then
[tex]tan(\emptyset)=\frac{Opp}{Adj}[/tex][tex]tan(45)=\frac{9}{BC}[/tex][tex]BC=\frac{9}{tan(45)}[/tex][tex]BC=\frac{9}{1}=9[/tex]Correct answer is
option C
9