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Important Limit Involving $$1-\cos x$$
For a non-zero constant $$a$$:
$$\lim_{x\to0}\frac{1-\cos ax}{x^2}=\frac{a^2}{2}$$
Usage
- Used to evaluate second-order trigonometric limits.
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Important Limit Involving $$1-\cos x$$
For a non-zero constant $$a$$:
$$\lim_{x\to0}\frac{1-\cos ax}{x^2}=\frac{a^2}{2}$$
Usage
- Used to evaluate second-order trigonometric limits.
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