@Lon More,
No. for final result I took 40 degrees.
The point of precise calculation is that I prove my "fast" calculation which was 20/25 Nm.
Of course I rely on experience and eyes during the work. And my experience instantaneously lead me to correct answer. Nothing less or more than logic.
But it seems that some people felt very "nervous" because they don't use logic or they don't have anyone to call.
Best regards,