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## Find the limit of $\frac{1-\cos\left(x\right)}{x^2}$ as $x$ approaches 0

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### Trig limit using pythagorean identity | Limits and continuity | AP Calculus AB | Khan Academy

$\lim_{x\to\:0}\left(\frac{1-\cos\left(x\right)}{x^2}\right)$