Why are burners in annular combustion chambers installed at an angle?

https://preview.redd.it/kpfsvouhw0dh1.png?width=316&format=png&auto=webp&s=bbd80832c14fa2e4dd17eedd628b16f874d07e16

In annular combustion chambers, the burners and the combustion chamber are often installed at an inclined angle rather than being positioned straight. Does anyone know the reason behind this design choice? Thanks in advance.