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I try to use 'solve' for nonlinear eauqtions in one variable, but the answer is tautological or "cannot evaluate symbolic expression numerically" if I add "explicit_solutions=True". Is Newton method (or any other, like secant method) implemented in Sage?

Ex: sage: x=var('x') sage: (x-cos(x)).solve(x)

[x == cos(x)]

while I would expect x= 0.739085

I try to use 'solve' for nonlinear eauqtions in one variable, but the answer is tautological or "cannot evaluate symbolic expression numerically" if I add "explicit_solutions=True". Is Newton method (or any other, like secant method) implemented in Sage?

Ex: sage: x=var('x') sage: (x-cos(x)).solve(x)

[x == cos(x)]

while I would expect x= 0.739085