Question

Two suplimentary angles are in the ratio 4 : 5 .Find the angles​

Answer 1

4x+5y=180

x=20

angles are 4x=80deg

                   5x=100deg

Answer 2

Answer:

Given two suplimentary angles are in the ratio 4:5

Let the angles be x

so we can write it in the form of 4x, 5x

We know sum of supplementary

angles = 180°

4x+5x =180°

9x =180°

x =180°÷9

x =20°

so ,

1 st angle = 4x =4×20° =80°

2 nd angle = 5x = 5×20° =100°

lets verify

4x + 5x =180°

4×20° +5×20° =180°

80°+ 100°=180°

180° =180°