document.write( "Question 827656: Find all solutions of the equation below on the interval [0,2pi). Enter your answer as a comma-separated list of values or enter none if there is no solution.\r
\n" ); document.write( "\n" ); document.write( "2cos 3alpha =1\r
\n" ); document.write( "\n" ); document.write( "Answer: Alpha =
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Algebra.Com's Answer #499011 by stanbon(75887)\"\" \"About 
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Find all solutions of the equation below on the interval [0,2pi). Enter your answer as a comma-separated list of values or enter none if there is no solution.
\n" ); document.write( "2cos 3alpha = 1
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\n" ); document.write( "cos(3a) = 1/2
\n" ); document.write( "3a = pi/6 or -pi/6
\n" ); document.write( "Answer:: a = pi/18 or -pi/18
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