Equations of bisectors of angles between intersecting lines $\frac{x-3}{\cos \theta }=\frac{y+5}{\sin \theta },\frac{x-3}{\cos \theta }=\frac{y+5}{\sin \theta }$are $\frac{x-3}{\cos \alpha }=\frac{y+5}{\sin \alpha }$ and $\frac{x-3}{\beta }=\frac{y+5}{\gamma }$ then