Answer:
Complementary; 13.5°
Step-by-step explanation:
Complementary angles are angles which sum up to a 90° angle, also known as a right angle. This is indicated by the bright red square in the corner.
To solve for x, we must set up an equation.
The two angles (4x and 36°), will have to equal 90°.
This is because, the two angles add up together to form a right angle.
4x + 36 = 90
Get rid of constants;
-36 -36
4x = 54
Isolate x by applying inverse operations, the inverse operation of multiplication is division(because 4 is being multiplied by x);
/4 /4
x = 13.5°