sanitary tee in 45 degree branch

Is it a problem to insert a sanitary tee in a drain line that is dropping at 45 degrees to a stack? (see attached drawing) or do I need to keep everything vertical??

tee

No problem, although if there was adequate room it would have made a nicer installation to drop straight down into the branch of a "Y".

Unfortunately

Unfortunately there wasn't enough room. I needed the clearance on the stack to route my vent line for the toilet up and then jog over. My only other alternative was to use a squirrelly arrangment of jogs to move the pipe over then back and that didn't seem as "smooth" .