find all solutions of the equation thetapie923piek5pie923pie

find all solutions of the equation theta=[pie/9+2/3pie*k,-5pie/9+2/3pie

Here the question is not clear that what is given and what have to find out.

Here Given theta=[pie/9+2/3pie*k,-5pie/9+2/3pie]

when we change the value of k from 0 to k then accordingly the value of theta will change.