B= 20°
and c = 160°
b is equal to the given angle, b = 20°
c is 180 - 20 = 160°
ABC = XYZ by SAS
AB = XY - Side
A = X - Angle
So you want to find another congruent <em>side</em>.
Removing the taken possible side, two sides can be congruent.
Either :
BC = YZ
<em>OR</em>
AC = XZ
The answer is -25/3.
If you need it simplified let me know.
Difference in size, degree,<span> circumstances, etc.; lack of equality.</span>