
Cheison P. answered 09/24/20
Experienced Math, Physics and Chemistry tutor
I am assuming that you are looking for what the angle and its supplements are.
*Two Angles are Supplementary when they add up to 180 degrees.
x+3x =180
4x = 180
x = 180/4
x = 45 degrees for the smaller angle.
180 - 45 = 135 degrees for the larger angle.
Proof:
45 + 3 x45=180
45 + 135 =180
180 = 180