If the measured angular separation between the second minimum to the left of the central maximum and the third minimum to the right of the central…

If the measured angular separation between the second minimum to the left of the central maximum and the third minimum to the right of the central maximum is $\displaystyle 30$° in a single slit diffraction pattern recorded using $\displaystyle 628$ nm light, then the width of the slit is $\displaystyle \_\_\_\_$ $\displaystyle \mu \mathrm{m}$.