I Limiti Notevoli (1) - Funzioni goniometriche

 $\lim_{x\rightarrow0}\ \frac{\sin x}{x}=\ \ ?$  

 $\lim_{x\rightarrow+\infty}\ \frac{\sin x}{x}=\ ?$  

 $\lim_{x\rightarrow0}\ \frac{\sin x}{3x}\ =\ ?$  

 $\lim_{x\rightarrow1}\ \frac{\sin x}{x}\ =\ ?$  

 $\lim_{x\rightarrow0}\ \frac{x}{\sin x}\ =\ ?$  

 $\lim_{x\rightarrow0}\ \frac{\tan x}{x}=\ ?$  

 $\lim_{x\rightarrow0}\ \frac{\tan x}{\sin x}=\ ?$  

 $\lim_{x\rightarrow+\infty}\ \frac{\tan x}{x}\ =\ ?$  

 $\lim_{x\rightarrow0}\ \frac{1-\cos x}{x^2}=\ ?$  

 $\lim_{x\rightarrow-\infty}\ \frac{1-\cos x}{x^2}=\ ?$