Answer:
It is angle 4 because they make 90 degrees together. This is if there are choices for the problem.
It would be ∠4
Angle 4 is the complementary angle of 3 because the sum of these angles is 90 degrees.
When two lines or rays converge at the same point, the measurement between them is called a "Angle."
We have:
From the angle diagram, angle 4 makes the complete right angle.
The sum of the complementary angles is 90 degree
Angle 3 + Angle 4 = 90 degree
Thus, angle 4 is the complementary angle of 3 because the sum of these angles is 90 degrees.
Learn more about the angle here:
brainly.com/question/7116550
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