Question

two supplementary angles are in the ratio 4:5. Find the angles​

Answer 1

80 , 100

Step-by-step explanation:

4x+5x= 180°

9x = 180°

x =180/9

x =20°

4x =80°

5x =100°

Answer 2

Step-by-step explanation:

4+5=9

supplementary angle = 180°

180/9 = 20°

1 = 20°

•°• one angle = 4 × 20° = 80°

•°• another one = 5 × 20° = 100°