Question

$lim_{n to o} frac{1-cosx}{x}$

Answer 1

$lim_{n to 0} frac{1-cosx}{x}= lim_{n to 0} frac{x^2}{2x}=lim_{n to 0} frac{x}{2}=0\\P.s.,,1-cosx sim x^2/2$