One angle of a triangle measures 20°. The other two angles are in a ratio of 3:5. What are the measures of those two angles?

Answer 1

180-20 = 160 = sum of the other two angles

3/(3+5) = 3/8 x 160 = 60 degrees

5/(3+5) = 5/8 x 160 = 100 degrees

or in radians the other two angles are pi/3 and 5pi/9