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Posted: **04/11-2007 20:04**

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sin 2x / 1 + cos 2x = tan x[/url]

Posted: **04/11-2007 20:06**

Hint:

[tex]\sin(2x)=2\sin(x)\cos(x)[/tex]

[tex]\cos(2x)=2\cos^2(x)-1[/tex]

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