the follwing trig identity is used alot...but i am unable to proove it because i dont know wat to start with in solving it....(adsbygoogle = window.adsbygoogle || []).push({});

sin2x=2tanx/(tan^2x+1)

it invlves the double angle formulae i know that obviously, i tried substituting sin and cos into the RHS of equation and get my answer down to:

2sinxcox/(1/cos^2x) which is close...i think since sin2x is 2sinxcosx....

does any1 hav any ideas??? LOL...hav any ideas...u already know

appreciate any hints

thanks

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# Homework Help: Prooving Trig Identities

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