document.write( "Question 905572: cosx=2/3\r
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Algebra.Com's Answer #549339 by lwsshak3(11628)\"\" \"About 
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cosx=2/3
\n" ); document.write( "what is cos(x-2π)
\n" ); document.write( "(x-2π)is like rotating x clockwise 2π which brings you back to the same reference angle.
\n" ); document.write( "so, cos(x-2π)=2/3
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