Answer:
B. 41
Step-by-step explanation:
Complementary angles mean when the sum of two angles = 90° In this situation, Angle 3 and Angle 4 add to give us 90°.
So all we have to do is 90 - 49 to give us Angle 3.
90 - 49 = 41°
Therefore the answer is B. 41
I hope this helps you!! ^-^