document.write( "Question 1065693: Solve:
\n" ); document.write( "4cos^2x-4cosx+1=0 \n" ); document.write( "

Algebra.Com's Answer #680866 by Boreal(15235) $\"\"$ $\"About$

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4cos^2x-4cosx+1=0
\n" ); document.write( "(2 cos x -1)^2=0
\n" ); document.write( "2 cos x=1
\n" ); document.write( "cos x=(1/2)
\n" ); document.write( "This is (1/2) at pi/3 radians and at 5 pi/3 radians. \n" ); document.write( "

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