Question

7. Two angle of a linear pair are in the ratio of 1:3, find the angles.
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Answer 1

ratio of angles=2:3

let one angle=2x

second angle=3x

sum of linear pair =180

2x+3x=180

5x=180

x=180/5

x=36

therefore,

one angle=2x=2*36=72

second angle=3x=3*36=108

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Answer 2

Step-by-step explanation:

Sum of angles of linear pair =180°

Let first angle =1x=X

and

Second angle = 3x

Now,

the sum of two angles of linear pair =180°

X+3X=180°

4X=180°

X=180°/4

X=45°

Now,

1st angle = 45°

2nd angle = 3X=3×45°=135°

2nd angle =135°

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