document.write( "Question 766929: find all real numbers that satisfy the equation \r
\n" ); document.write( "\n" ); document.write( "2 cos (3piX)= 1
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Algebra.Com's Answer #467331 by stanbon(75887)\"\" \"About 
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find all real numbers that satisfy the equation
\n" ); document.write( "2 cos (3piX)= 1
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\n" ); document.write( "cos(3piX) = 1/2
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\n" ); document.write( "3piX = pi/3 or 60 degrees
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\n" ); document.write( "X = pi/9 or 20 degrees
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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