- #1

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## Main Question or Discussion Point

The hint I found in http://math.stackexchange.com/quest...-lim-limits-x-to0-frac-tan-xx-1#answer-448210

limx→0(tan(x) / x)= limx→0( (tan(x)−0) / (x−0)) = limx→0 ( (tan(x)−tan(0) ) / (x−0) )=⋯

Then, I don't know how to continue it..

What identity is used ?

I don't see any similar identity to it

limx→0(tan(x) / x)= limx→0( (tan(x)−0) / (x−0)) = limx→0 ( (tan(x)−tan(0) ) / (x−0) )=⋯

Then, I don't know how to continue it..

What identity is used ?

I don't see any similar identity to it