Question

The ratio of two supplementary angles is 3:9 what is the measure of the larger angle

Answer 1

135

Explanation:

Ratio = 3 : 9

Angles are : 3x , 9x

3x + 9x = 180 {supplementary angles}

12x = 180 {divide both side by 12}

x = 180/12

x = 15

Larger angle = 9x = 9*15 = 135