Answer:
B = 119 degrees
Explanation:
We know that the sum of angles in a triangle are equal to 180 degrees, and we know that the sum of angles on one side of a straight line are also equal to 180 degrees. We can do subtraction to find C.
180 - 112 = 68, so C = 68 degrees.
Now we add up 51 + 68 to get 119 degrees, and subtract 119 from 180 to find A.
180 - 119 = 61, so A = 61 degrees.
Lastly, we subtract 180 - 61 to find B.
180 - 61 = 119, so B = 119 degrees