Show that tan x is an odd function: tan (-x) = - tan x?

Not sure how to do this, help would be much appreciated (Happy)

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- Mar 31st 2011, 10:34 PMbrumby_3Showing that a function is odd
**Show that tan x is an odd function: tan (-x) = - tan x?**

Not sure how to do this, help would be much appreciated (Happy) - Mar 31st 2011, 10:38 PMchisigma
Of course is $\displaystyle \tan x = \frac{\sin x}{\cos x}$ ... $\displaystyle \sin x$ is an odd function and $\displaystyle \cos x$ an even function... what about the ratio?...

Kind regards

$\displaystyle \chi$ $\displaystyle \sigma$ - Mar 31st 2011, 11:19 PMCaptainBlack