Complementary means the sum of both of these angles will be 90*
So: Let 'x' represent the smaller angle
x+(x+20)=90
x+x=90-20
2x=70
x=35
Therefore if the smaller angle is 35*, then the larger angle must be 55*
35+55=90, therefore these are the two angles that are complementary where one of them contains 20* more than the other
