Step-by-step explanation:
COMPLEMENTARY ANGLES :
THE ANGLES WHICH HAVE SUM OF THEIR ANGLES = 90°
Let the measure of angle be x°.
◕ It's compliment = (90 - x )°.
According to the question ;
⇢x=(90°−x)−18°
⇢x + x = 90° − 18°
⇢2x=72°
⇢x= 72°/2
⇢x=36°
And, it's compliment = 54°
