i'm having trouble with this limit. Can you guys help? $\displaystyle \lim_{x\to 0} \frac{x(1-\cos(x))}{\sin^2 x} $ Also, i cant use L'Hopital's rule
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sin^2(x) = 1 - cos^2(x) = [1 - cos(x)][1 + cos(x)] Then cancel.... Does that help?
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