Question

Two supplementary angles are in the ratio 7 : 11. Find the angles.

Answer 1

Let two supplementary angles are 7x and 11x

∴ 7x+ 11x= 180°

⇒ 18x = 180°

⇒ x = `180/18`

⇒ x = 10°

Two supplementary angles are

7x = 7 x 10° = 70°

11x= 11 x 10°= 110°