What is the maximum and minimum value of Cos(A) + Cos(B) + Cos(C) for any given triangle ABC?

Any engineering jobs are here?? Iam an mecha...

Wow

Solve it please.

How to do 34?

Nice

Solve question 21.

What is ortho effect?

Super

If a hydrogen atom is supplied with 15.8 eV ...

Superrrrrrrr,.....,