Question

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

Answer 1

Answer:

let angles be x

supplementary angles = 180°

4x + 5x =180°

9x =180°

x = 180/ 9

x = 20

first angle = 4 × 20 = 80

second angle = 5 × 20 = 100

Answer 2

Answer:

let the first angle be = 4x

then, second angle = 5x

A/q, 4x + 5x = 180°

9x = 180°

x = 180°/9

x = 20°

Therefore, First Angle = 4x = 4×20 = 80°

Similarly, Second Angle = 5x = 5×20 = 100°