document.write( "Question 928515: Establish or prove identity: tan x cot x- cos 2x = sin 2x \n" ); document.write( "

Algebra.Com's Answer #563670 by Alan3354(69443) $\"\"$ $\"About$

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Establish or prove identity: tan(x)*cot(x) - cos(2x) = sin(2x)
\n" ); document.write( "1 - cos(2x) = sin(2x)
\n" ); document.write( "Not an identity. \n" ); document.write( "

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