Guess who wrote:
OK, I won't mention past this the stupid mistake I made and came THAT
close...

I have some small pieces of cedar to cut. They are already formed at
3 1/2" long, and 1 1/2" square ends. The problem is that one corner
needs to be more than 90 degrees. If using a table saw, this means
pushing them through a tilted blade for two adjacent sides to form the
larger angle on one edge.

Question ...how to do this safely?

snip

Forget the table saw.

Trying to do this job on one is a disaster waiting to happen IMHO.

Consider a 12" disc sander with 50 grit for this job.

Build a jig to hold piece and have at it.

My guess it will take as long to design and build the jig as it will to
do the job.

Good luck.

Lew