Answer : < 2 = 64 degrees
Supplementary angles are pair of angles in which their sum is 180 degrees
The sum of supplementary angles = 180 degrees
< 1 + < 2 = 180
where < 1 = 116 degrees
Substitute the value of < 1 in to the equation
116 + < 2 = 180
Isolate < 2
< 2 = 180 - 116
< 2 = 64 degrees
