Answer :
Complement means : 90°
Supplement means : 180°
So, Supplement of 120° = (180-120)° = 60°
Now, complement of 60° = (90-60)° = 30°
Supplement means : 180°
So, Supplement of 120° = (180-120)° = 60°
Now, complement of 60° = (90-60)° = 30°
The supplement of 120 degrees is 180-120=60 degrees
the complement of 60 degrees is 90-60=30 degrees
the complement of 60 degrees is 90-60=30 degrees