document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=704567>Question 704567</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 2cos(x) - sec(x) = 1\r<BR>\n" );
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document.write( "My work i dont know if this is right??\r<BR>\n" );
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document.write( "2cos(x) - (1/cos(x))=1<BR>\n" );
document.write( "2cos(x^2) -1 / cos =1<BR>\n" );
document.write( "-2sin(x^2) /cos =1<BR>\n" );
document.write( " i do not know where to go from there\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #434187 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=434187\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  2cos(x) - sec(x) = 1 <BR>\n" );
document.write( "My work i dont know if this is right?? <BR>\n" );
document.write( "2cos(x) - (1/cos(x))=1<BR>\n" );
document.write( "2cos(x^2) -1 / cos =1<BR>\n" );
document.write( "*************It's not x^2, it's cos^2*************<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "2cos^2 - 1  = cos<BR>\n" );
document.write( "2cos^2 - cos - 1  = 0<BR>\n" );
document.write( "(2cos + 1)*(cos - 1) = 0<BR>\n" );
document.write( "cos = 1<BR>\n" );
document.write( "x = 0 + n*180 degs, n = +/1 0,1,2,3...<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "2cos = -1<BR>\n" );
document.write( "x = 120 + n*360 n = +/1 0,1,2,3...<BR>\n" );
document.write( "x = 240 + n*360 n = +/1 0,1,2,3... </SPAN>\n" );
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