Ile to jest: 1- [latex] frac{ sqrt{2} }{2} [/latex]= ?

[latex]1- frac{ sqrt{2} }{2} = frac{ 2}{ 2 } - frac{ sqrt{2} }{2} = frac{2- sqrt{2} }{2}= frac{1}{2} ( 2- sqrt{2} ) approx 0,29[/latex]