Are there inverse trig identities, analagous to:
sin(A+B)=sinAcosB+cosAsinB ?
I know there are various identities dealing with the sum of two inverse trig functions, but I was wondering if there was a nice way to split up a compound variable, for want of a better word.
If there are, please don't post a proof because I'd rather try and prove them myself.
Thanks
EDIT: Sorry for the typo in the title