Question

Two complementary angels are in the ratio 4:5, find the angles.​

Answer 1

First angle = 40

Second angle = 50

Explanation:

let 1st angle be 4x and 2nd angle be 5x

4x + 5x = 90 [Complementary means the sum of angles is 90]

=> 9x = 90

=> x = 90/9

=> x = 10

First angle = 4x = 4(10) = 40

Second angle = 5x = 5(10) = 50

Answer 2

1 st angle = 40

2 nd angle= 50

Explanation:

1. let 1 st angle be 4x and 2 nd angle be 5x
2. 4x +5x =90
3. 9x =90
4. x=90/9
5. x= 10