1.

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

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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