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Question Number 126482 by ayyoubmaths last updated on 20/Dec/20

Answered by Dwaipayan Shikari last updated on 20/Dec/20

$$\underset{x\to 0}{\lim }\left(\frac{cosx-1}{x}\right)=-\frac{2{sin}^2\frac{x}{2}}{x}=-\frac{x^2}{2x}=0$$

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