I wish to find the solution to
-2.0(Cos[x] + Cos[0.05x]) == 1.0,
and I use NSolve. However, Mathematica does not give me a result; it complaints, and gives me the message "The equations appear to involve the variables to be solved for in an essentially non-algebraic way".
What can I do to find the solution x? I just need a numerical solution, nothing fancy.