Possible new formula for simple tension problems

[Soenhay]

A quick shortcut for problems that involve a weight (W) hanging from two cables with tensions T1 and T2 and angles A and B.

Probably not that useful.
Probably already known.

But just in case here it is:

The following is the proof which also shows how much time one might save:

 

[Studiot]

Hello Soenhay and welcome to Physics Forums.

That's a neat little formula, I don't think I've seen it put that way before so keep at it you never know what you might come up with next.