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Question
Given two angles are supplementary and one angle is 20° more than other. Find the two angles
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Solution
Let the angles be x and x + 20°
According to the problem,
x + x + 20° = 180°
2x + 20° = 180°
2x = 180° – 20°
2x = 160°
x = `(160^circ)/2`
x = 80°
x + 20° = 80° + 20°
= 100°
∴ The two angles are 80° and 100°
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