Question

two supplementary angles are in the ratio of 4:5 find the angles​

Answer 1

Answer:

80,100

Step-by-step explanation:

angle a + angle b = 180

angle a = 4x, angle b = 5x

4x + 5x = 180

9x= 180

x= 180/9

x = 20

a = 4x = 4*20= 80

b = 5x = 5*20=100

Answer 2

Step-by-step explanation:

4x + 5x = 180 ...... supplementary angles

=9x = 180

= 180÷9

= 20

x = 20

4x= 4×20

=80

5x= 5× 20

= 100