Question

The angles of a triangle are in ratio 1:3:8. Find the measures of the three angles of this triangle

Answer 1

  let the angles be 1x,3x and 8x 
sum of ol the 3 angles=180 
1x+3x+8x=180 
12x=180 
x=15 

1x=1(15)=15 
3x=3(15)=45 
8x=8(15)=120 

measures of 3 angles are- 
12,45,120 
:)