Answer:
ABN = 71 degrees
Explanation:
Given that;
angle ABC = 142 degrees
cut by a bisector BN
New angle created (angle ABN),
By definition of a bisector(strictly divided by 2), we must divide the main angle(ABC) by 2.
ABN = ABC/2
ABN = 142/2
ABN = 71 degrees.
Hope this helped!