Question

Two complemtwo entary angles are in the ratio 2:7 .Find two angles

Answer 1

18,72
2x + 7x=90
10x=90
x=90/9
x=9
2x=18
7x=72

Answer 2

let the 2angles be 2x,7x
complementry angles=180°
A/Q
9x=180°
x=20°
2x=2×20=40°
7x=7×20=140° ans