What is the approximate angular radius of the globular cluster Omega Centauri?

Using the angular size of Omega Centauri (42 arcminutes) as its angular diameter, what is the approximate angular radius of the globular cluster Omega Centauri?|||Is this a trick question? The radius is half the diameter. Half the "angular diameter" of 42 arc minutes gives an "angular radius" of about 21 arc minutes.