Question

Two supplementary angles are in the ratio 2:7. Find the measure of the Acute angle.

Answer 1

40°

Explanation:

Ratio of two supplementary angles = 2 : 7

The angles are 2x , 7x

2x + 7x = 180 {Supplementary}

9x = 180

x = 180/9

x = 20

Acute angle = 2x = 2*20 = 40