document.write( "Question 853734:  Solve Each equation for the exact solution in the interval 0 to 2pi
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document.write( "4cos(x)-1=0 \n" );
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Algebra.Com's Answer #514295 by stanbon(75887)    ![]() You can put this solution on YOUR website! 4cos(x)-1=0 \n" ); document.write( "----- \n" ); document.write( "cos(x) = 1/4 \n" ); document.write( "----- \n" ); document.write( "x = arccos(1/4) = 1.32 radians or x = 2pi-1.32 = 4.97 radians \n" ); document.write( "------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "==================== \n" ); document.write( "  |