The supplementary angle to 42 degrees is 138 degrees
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compliment angle = 45 degrees and supplement angle = 135 degrees
The angles are: 75 degrees and 105 degrees
the angle is 180 and its supplement is zero(0).All in degrees
66
Supplementary angle add to 180 degrees. So the supplement to a 60 deg angle is 180 - 60 = 120 degrees.