Question

4. Angles A and B are supplementary. If mA = 67, find mB

Answer 1

113 degrees

Explanation:

Two angles are called supplementary when they add up to 180 degrees

`180 = x + y \\ 180 = 67 + y \\ y = 180 - 67 \\ y = 113 \\ therefore \: mB \: = 113`