document.write( "Question 1108605: Identify the expression that completes the equation so that it is an identity.\r
\n" ); document.write( "\n" ); document.write( "1+sec u/ tan u -tan u/ 1+sec u =?
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Algebra.Com's Answer #723620 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
It's ambiguous.
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