document.write( "Question 304442: Find all solutions:\r
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document.write( "2cos(x)+1=0 \n" );
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Algebra.Com's Answer #218006 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Find all solutions: \n" ); document.write( "2cos(x)+1=0 \n" ); document.write( "--- \n" ); document.write( "cos(x) = -1/2 \n" ); document.write( "--- \n" ); document.write( "x = 120 + 360n or x = 240 + 360n where n = 1,2,3,.... \n" ); document.write( "======================================================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "=========== \n" ); document.write( " |