Solve equation for 0 less than or equal to theta less than 360.
3-1/5*tan(theta)=16/5
3 - 1/5 tanx = 16/5
-1/5 tanx = 1/5
tanx = -1
Now recall that tanx is negative in QII and QIV
3-1/5*tan(theta)=16/5
-1/5 tanx = 1/5
tanx = -1
Now recall that tanx is negative in QII and QIV