Answer:
Alright, lets get started.
Angle 3 and angle 4 are adjacent angles because they are having the common side.
They both are on straight line, so, their addition will be 180°.
Suppose angle 4 is x , hence
angle 4 + angle 3 = 180
Subtracting 89 from both sides
°
Hence angle 4 is 91°. : Answer
Hope it will help :)
Step-by-step explanation:
