Question

The angle of a triangle are in the ratio of 1 : 3 : 5. Find their measures

Answer 1

The angles are in the ratio 1:3:5
let the angles be 1x, 3x, and 5x
so,
1x+3x+5x=180° (Sum of angles in a triangle is 180°)
            9x=180°
              x=180°/9
              x=20°

1x=1X20=20°
3x=3X20=60°
5x=5X20=100°

Therefore the angles are 20°,60° and 100°