calculus - How to prove that $\lim\limits_{x\to0}\frac{\sin x}x=1$? - Mathematic
How can one prove the statement $$\lim\limits_{x\to 0}\frac{\sin x}x=1$$ without using the Taylor series of $\sin$, $\cos$ and $\tan$? Best would be a geometrical solution. This is ......