document.write( "Question 1091878: Tan 3x = 3 tan X - tan^3 X / 1 - 3 tan^2 x \n" ); document.write( "
Algebra.Com's Answer #706370 by ikleyn(52781)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Use parentheses to make your formulas readable and unambiguous.\r
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\n" ); document.write( "\n" ); document.write( "Use parentheses when you post your formulas to this forum.\r
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\n" ); document.write( "\n" ); document.write( "It is the  REQUIREMENT  of this site.\r
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\n" ); document.write( "\n" ); document.write( "There is  NO OTHER WAY  to make them readable and unambiguous.\r
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\n" ); document.write( "\n" ); document.write( "By  violating  this  RULE,  you work  against yourself  and  against your better interests.\r
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\n" ); document.write( "\n" ); document.write( "With it,  welcome to the forum !!\r
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\n" ); document.write( "I repeat this mantra to each and every new visitor coming to this forum,\r
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