Question

plz ans this question
many times I try but I didn't get the answer​

Answer 1

Answer:

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let the 1st angle x

let the 2nd angle 2x

third angle=20°

x+2x+20°=180°

3x=180°-20°

x=160°/3

x=53.33

now,

x=53.33

2x=53.33*2

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Answer 2

Answer:

1. let one angle be X

2.let another angle be y

3.so the statement is X=20+Y

4.so X-Y=20 1. equation

5.so we know that the sum of the supplementary angle is 180 degree

6.so X+Y=180 degree 2. equation

7. By substituting 2.equation

8. We get Y=180-X 3. equation

9.using value of Y in 1.equation

10.2x=180+20

11.X=200

2

12.X=100

13. Using value of X for Y

14. Y=180-X

15. Y=180-100

16. Y= 80

17. Hence the value of X and Y are 100 and 80

18. proof = X+Y= 180 eq.2

19. 100+80=180

20.proof =X-Y=20 eq.1

21. 100-80=20

22.Hence proved

I Tried Q.no 2 but I can't