Question

Which angle is complementary to <3

Answer 1

Angle 4

Explanation:

Complementary angles means sum of angles should be 90°

Angle 3 + Angle 4 = 90°

So,

Angle 4 is complementary to Angle 3.

Answer 2

Explanation:

The two non-right angles are complementary, because in a triangle the three angles add to 180°, and 90° has already been taken by the right angle. When two angles add to 90°, we say they "Complement" each other. because the right angle is thought of as being a complete angle.