document.write( "Question 1030502: Evaluate the inverse of cos when negative square of 2 is divided by 2. \n" ); document.write( "
Algebra.Com's Answer #645365 by stanbon(75887)\"\" \"About 
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Evaluate the inverse of cos when negative square of 2 is divided by 2.
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\n" ); document.write( "arccos(-sqrt(2)/2) = (3/4)pi
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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