document.write( "Question 314066: solve 4cos^2x-3=0 for all real values of x \n" ); document.write( "

Algebra.Com's Answer #224546 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"4cos%5E2%28x%29-3=0\"$
\n" ); document.write( " $\"4cos%5E2%28x%29=3\"$
\n" ); document.write( " $\"cos%5E2%28x%29=3%2F4\"$
\n" ); document.write( " $\"cos%28x%29=0+%2B-+sqrt%283%29%2F2\"$
\n" ); document.write( "x=30, 150, 210, 330 \n" ); document.write( "

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