document.write( "Question 864003: 1-tanA/1+tanA=cotA-1/cotA+1 \n" ); document.write( "
Algebra.Com's Answer #521294 by Edwin McCravy(20064)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "\"%281-tanA%29%2F%281%2BtanA%29\"\"%22%22=%22%22\"\"%28cotA-1%29%2F%28cotA%2B1%29\"\r\n" );
document.write( "\r\n" );
document.write( "        \"%22%22=%22%22\"\"%28cotA-1%29\"\"%22%F7%22\"\"%28cotA%2B1%29\"\r\n" );
document.write( "\r\n" );
document.write( "Use the identity \"cotA=1%2FtanA\"\r\n" );
document.write( "\r\n" );
document.write( "        \"%22%22=%22%22\"\"%281%2FtanA-1%29\"\"%22%F7%22\"\"%281%2FtanA%2B1%29\"\r\n" );
document.write( "\r\n" );
document.write( "        \"%22%22=%22%22\"\"%281%2FtanA-tanA%2FtanA%29\"\"%22%F7%22\"\"%281%2FtanA%2BtanA%2FtanA%29\"\r\n" );
document.write( "\r\n" );
document.write( "        \"%22%22=%22%22\"\"%281-tanA%29%2FtanA%29\"\"%22%F7%22\"\"%281%2BtanA%29%2FtanA\"\r\n" );
document.write( "\r\n" );
document.write( "        \"%22%22=%22%22\"\"%281-tanA%29%2FtanA%29\"\"%22%D7%22\"\"tanA%2F%281%2BtanA%29\"\r\n" );
document.write( "\r\n" );
document.write( "        \"%22%22=%22%22\"\"%281-tanA%29%2Fcross%28tanA%29%29\"\"%22%D7%22\"\"cross%28tanA%29%2F%281%2BtanA%29\"\r\n" );
document.write( "\r\n" );
document.write( "        \"%22%22=%22%22\"\"%281-tanA%29%2F%281%2BtanA%29\"\r\n" );
document.write( "Edwin
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