document.write( "Question 641826:
\n" ); document.write( "Find the exact value of the expression.\r
\n" ); document.write( "\n" ); document.write( "sec^2 pi/4 - 6=\r
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Algebra.Com's Answer #403980 by lwsshak3(11628)\"\" \"About 
You can put this solution on YOUR website!
Find the exact value of the expression.
\n" ); document.write( "sec^2 pi/4 - 6=
\n" ); document.write( "1/cos^2(π/4)-6=
\n" ); document.write( "cos (π/4)=√2/2
\n" ); document.write( "cos^2(π/4)=2/4=1/2
\n" ); document.write( "1/(1/2)-6=2-6=-4
\n" ); document.write( "sec^2 pi/4-6=-4
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