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Question
Two supplementary angles are in ratio 5 : 4. Find the angles
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Solution
Let the angles be 5x and 4x
According to the problem
5x + 4x = 180°
9x = 180°
x = `(180^circ)/9`
x = 20°
∴ Two angles are
(i) 5x = 5 × 20° = 100°
(ii) 4x = 4 × 20° = 80°
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