document.write( "Question 1142319: Prove that
\n" ); document.write( "[sin(2x) - cos(2x) +1] / [sin(2x) + cos(2x) -1] = tan (theta + pi/2) \r
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Algebra.Com's Answer #763031 by ikleyn(52884)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "The formula in the post is INCORRECT.\r
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\n" ); document.write( "\n" ); document.write( "Left side depends on x, while the right side includes theta not linked to x (!)\r
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\n" ); document.write( "\n" ); document.write( "Is it so difficult to write it correctly ?\r
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