Quick note: to get the images for (2) and (3), post these codes to get the figures. Make sure you say Render as Image in the TeXeR
(2)
[asy]
unitsize(2 cm);
pair A, B, C;
A = dir(40);
B = (0,0);
C = (3,0);
draw(A--B--C--cycle);
label("$A$", A, N);
label("$B$", B, SW);
label("$C$", C, SE);
label("$3$", (A + B)/2, NW);
label("$7$", (B + C)/2, S);
label("$50^\circ$", B + (0.5,0.15));
[/asy]
(3)
[asy]
unitsize(1 cm);
pair A, B, C;
A = 4*dir(71);
B = (0,0);
C = (5,0);
draw(A--B--C--cycle);
label("$A$", A, N);
label("$B$", B, SW);
label("$C$", C, SE);
label("$8$", (A + C)/2, NE);
label("$61^\circ$", A + (0.2,-0.8));
label("$43^\circ$", C + (-0.8,0.3));
[/asy]
