I have a couple of questions but idk how to put asymptote code into an image here so ill sub mit the questions one at a time
Find BC in the diagram below
[asy]
size(150);
pair A,B,C;
A=origin;
B=7dir(45);
C=(3sqrt(2),0);
draw(A--B--C--cycle);
dot("$A$",A,SW);
dot("$B$",B,N);
dot("$C$",C,SE);
label("$7\sqrt{2}$",A--B,NW);
label("$6$",A--C,S);
label("$45^\circ$",A,3dir(22));
[/asy]