You first need to find angle A. You can do this by noticing that it is on a straight line with the angle with a measure of 134°, which means it must be 180 - 134 because there are 180° on a straight line. 180 - 134 = 46°, which is angle A
Angle B is complementary to angle A, which means they add up to 90°. This means that you can do 90 - 46 to find angle B, which is 44°.
I hope this helps!
