correct angle for a drive shaft with 2 joints

[gn7]

, so i do know the u joints can not be in a straight line they like a little angle. What is the right angle ?

Max 7 degrees minimum 2 degrees .......

Straight inline being a problem is a myth. The joints would out last your next 5 cars and 3 boats.
Think about it, if the joints we dead inline, nothing moves, including the needles everyone seems to think would fail, supposedly from lack of lube or some such nonsense. You wouldn't need lube. You wash the lube out and run it just fine. Nothing is moving. You could weld the u joint to the yokes and it would work fine.
1* is not as great, but it beats 25 all to hell. I can find you dozens of pictures u joint failure due to excessive angle in manufacture's tech bulletins and , you can't find me one due to lack of angle.