document.write( "Question 813090: prove identity
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document.write( "(2tanx)(secx)= 1/1-sinx - 1/1+sinx \n" );
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Algebra.Com's Answer #489493 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! prove identity \n" ); document.write( "(2tanx)(secx)= 1/1-sinx - 1/1+sinx \n" ); document.write( "*** \n" ); document.write( " \n" ); document.write( "Start with right side: \n" ); document.write( " \n" ); document.write( "LCD:(1+sin(x))(1-sin(x))=1-sin^2(x) \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "verified: right side=left side \n" ); document.write( " |