Question

If one angle of a triangle is 80° and the other two angles are in the ratio 3:7

Answer 1

let ratio be x....
3x+7x+80=180
10x=100
x=10



hope the ans will help you......
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Answer 2

180-80=100

then

3x+7x=100

10x=100

x=10

then other two angles are 3*10 and 7*10