Let the second angle be x.
Second angle = x
First angle = 3x - 6
The sum of the two angles is 180°
x + 3x - 6 = 180
4x - 6 = 180
4x = 186
x = 186 ÷ 4 = 46.5°
Second angle = 46.5°
First angle = 3(46.5) - 6 = 133.5°
Answer: The angles are 46.5° and 133.5°