Answer
The Squeeze Theorem
Work Step by Step
The Squeeze Theorem:
If $f(x)\leq g(x)\leq h(x)$ when $x$ is near $a$ (except possibly at $a$) and $$\lim\limits_{x\to a}f(x)=\lim\limits_{x\to a}h(x)=L$$ then $$\lim\limits_{x\to a}g(x)=L$$
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