if the angle of triangle are in ratio 1:2:3 ,then the smallest angle in radian is
Since angles are in 1:2:3 Ratio. Let the smallest angle be x, followed by 2x and 3x.
Hence the Total of all angles in 180 Degrees.
x+2x+3x=180
x=30 Degrees
180 Degrees in Pi Radian, so 30 Degrees in proportion by Unitary Method is (30/180)*Pi Radian
Or Pi/6 Radian, which is roughly 0.5235, taking Pi as 3.1412.