Question

Q. 2 If two supplementary angles are in the ratio 5:7 , then the

larger of the two angles is.​

Answer 1

5x+4x =180

9x=180

x=180/9

x=20

5x= 100 [5x20]

7x= 140 [7x20]

Answer 2

Supplementary Angle = 180 degree

Ratio = 5:7

= a:b

Total Parts of the angle = 5+7 = 12

a = 180/12 * 5 = 75 degree

b = 180/12 * 7 = 105 degree

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