document.write( "Question 606607: how to prove the identity sin x / 1-sinx - sin x / 1+sin x = 2tan^2 x \n" ); document.write( "

Algebra.Com's Answer #382129 by lynnlo(4176) $\"\"$ $\"About$

You can put this solution on YOUR website!
tan x=0 \n" ); document.write( "

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