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If the ratio of two supplementary angles is 13 : 5, then find the difference between the two.A. 60°B. 70°C. 80°D. 120°1. C2. B3. D4. A |
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Answer» Correct Answer - Option 1 : C Given The ratio of two supplementary angles is 13 : 5 Concept used Sum of two angles which are Supplementary angle is 180° Calculation Let first angle be 13x then second angle be 5x ⇒ 13x + 5x = 180° ⇒ 18x = 180° ⇒ x = 10° ⇒ First angle is 13 × 10 = 130° ⇒ Second angle is 5 × 10 = 50° ∴ Difference between angles is 130° - 50° = 80° |
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