document.write( "Question 327955: solve : cos(3x)=-1 \n" ); document.write( "
Algebra.Com's Answer #234901 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
\"cos%283x%29=-1\"
\n" ); document.write( "\"3x=pi\"
\n" ); document.write( "\"x=pi%2F3\" or 60 degrees.
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