(adsbygoogle = window.adsbygoogle || []).push({}); [SOLVED] Limits Question

Hello ,

I need some help with this, I can't find a way to solve it :

lim_{x-->0}(1/tan x)^{2}- 1/x^{2}

from it's graph , the result seems to be -2/3 , but still don't know how , please help

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# Limits Question

**Physics Forums | Science Articles, Homework Help, Discussion**