Respuesta :

r3t40

[tex]

\lim_{x\to0^+}\frac{1-\cos(x)}{x^2\sin(x)}=\frac{1-\cos(0^+)}{0^+^2\sin(0^+)\frac{0^+}{+\infty}=\boxed{0^+}

[/tex]

Hope this helps.