Question
Two supplementary angles are in the ratio 4 : 5. Find the angles.
✓
Answer
Let the angles be 4x and 5x. It is given that they are supplem entary angles.$\therefore$ 4x + 5x = 180
⇒ 9x = 180 ⇒ x = 20° Hence 4x = 80, 5x = 100$\therefore$ Angle are 80° and 100°.
⇒ 9x = 180 ⇒ x = 20° Hence 4x = 80, 5x = 100$\therefore$ Angle are 80° and 100°.
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