The compliment of an angle is found by taking 90 degrees minus the known angle. Therefore, you take 90 minus 30 which equals 60 degrees.
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60 degrees
a 60-degree angle
A 60 degree angle
The complement to a 60 degree angle would be 30. The ratio then would be 2.
150 degrees
It is 60 degrees
A right angle
90 degrees
15 degrees. A bisected 60 degree angle makes 2 30 degree angles by definition of an angle bisector, then a 30 degree angle makes 2 15 degree angles by definition of an angle bisector.
90 degrees
60 degrees
30 degree angle