sinx ≤ x ≤ tanx(adsbygoogle = window.adsbygoogle || []).push({});

You need the above inequality to prove that lim x-> 0 of sinx/x = 1, but I've only ever seen it derived geometrically. Is there an analytical proof of the above inequality, from which you can continue the sinx/x proof as normal?

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# Is there a non-geometic proof of this inequality

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