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OCW Scholar - Single Variable Calculus 7 Online
OpenStudy (siberman):

I have a question regarding value B in reference to the definition of the derivatives of sinx and cosx. Basically he is saying that sinDeltaX/DeltaX = 1 as DeltaX tends towards 0. But sin0 = 0, so is this not 0/0?? Any help greatly appreciated, Thanks

OpenStudy (anonymous):

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