As pi radians are equal to 180 degrees:
[tex]\pi\text{rad}=180º[/tex]Then, 1 radian is equal to:
[tex]\text{rad}=\frac{180º}{\pi}[/tex]Then, for the given angle in radians (11π/6):
[tex]\frac{11\pi}{6}\cdot\frac{180º}{\pi}=330º[/tex]Then, 11π/6 radians are equal to 330 degrees.