Respuesta :

Answer:119

Step-by-step explanation:

edge 2021
B = 119 degrees

A straight line is 180 degrees
The 112 degree angle and angle C make up a straight line, so 112+C = 180
c = 68 degrees

The sum of a triangle’s angles also equal 180 degrees, so angle A + angle B + angle C =180
This means 51 + 68 + A = 180
119+A=180
A = 61 degrees

Now knowing angle A, and knowing that a straight line is 180 degrees, you can solve for angle B

A+B =180
61+B=180
B=119 Degrees

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