Limit X tends to zero 1- cos x upon x square
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limx>0 (1-cos x)/x^2
limx>0 (2sin^2 x)/x^2
limx>0 2 (sin x)^2/x^2
2 limx>0 (sin x)^2/x^2
2 x 1
2
limx>0 (2sin^2 x)/x^2
limx>0 2 (sin x)^2/x^2
2 limx>0 (sin x)^2/x^2
2 x 1
2
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