document.write( "Question 641861: please please please solve for x:\r
\n" ); document.write( "\n" ); document.write( "sec^2 pi x = 4/pi
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Algebra.Com's Answer #403979 by lwsshak3(11628)\"\" \"About 
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solve for x:
\n" ); document.write( "sec^2 pi x = 4/pi
\n" ); document.write( "sec^2 πx = 4/π
\n" ); document.write( "take sqrt of both sides
\n" ); document.write( "sec(πx)=±2/√π
\n" ); document.write( "1/cos(πx)=±2/√π
\n" ); document.write( "2cos(πx)=±√π
\n" ); document.write( "cos(πx)=±√π/2
\n" ); document.write( "πx=arccos(±√π/2)≈.4816
\n" ); document.write( "x=.48166/π≈.1533 radians
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