document.write( "Question 931435: Write the expression as an algebraic expression in x for x > 0.
\n" ); document.write( "cos (1/2 arccos x)
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Algebra.Com's Answer #565597 by lwsshak3(11628) $\"\"$ $\"About$

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Write the expression as an algebraic expression in x for x > 0.
\n" ); document.write( "cos (1/2 arccos x)=cos(x/2)=ą $\"sqrt%28%281%2Bcosx%29%2F2%29\"$ \n" ); document.write( "

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