Question

13. The second angle of a triangle is 15° less than twice the first angle. The third angle is 20° more than the second angle. Find the three angles.
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Answer 1

Answer:

45,75and 60 respectively

Step-by-step explanation:

hope helpful

Answer 2

Answer:

Step-by-step explanation:

1 st angle =x

2 nd angle =2x-15

3 rd angle =2x-15+20

so,

x + 2x-15+2x-15+20=180

5x-10=180

5x=190

x=38

2x-15=61

2x-15+20=81