A ray of light falls on a plane mirror. When the mirror is turned about an axis at right angles to the plane of the mirror by $\text{2}0°$ , the angle between incident ray and new reflected ray is $\text{45}°$ . The angle between the incident ray and original reflected ray is (3 + x) or $\left(\text{83 }+\text{ x}\right)°$ . The value of x is