document.write( "Question 298471: please help me answer my question\r
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document.write( "find all solutions of the equation 4cos^2x-4cosx+1=0 \n" );
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Algebra.Com's Answer #214682 by Greenfinch(383) You can put this solution on YOUR website! Treat as a quadratic. Factorize it into \n" ); document.write( "(2cosx -1)^2 = 0 \n" ); document.write( "cos x = 1/2 \n" ); document.write( "x = 60 or 300 degrees \n" ); document.write( " |