document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=960544>Question 960544</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 2 cos^2 theta-13 cos theta = -6\r<BR>\n" );
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document.write( "We are asked to find:\r<BR>\n" );
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document.write( "a) all degree solutions and (let k be any integer)\r<BR>\n" );
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document.write( "b) 0 degree<theta<360 degrees\r<BR>\n" );
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document.write( "I have no idea how to set up these problems (we are not supposed to use a calculator) and how the degrees are found.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #587033 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=587033\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2 cos^2 theta-13 cos theta = -6 <BR>\n" );
document.write( "We are asked to find: <BR>\n" );
document.write( "a) all degree solutions and (let k be any integer) <BR>\n" );
document.write( "b) 0 degree I have no idea how to set up these problems (we are not supposed to use a calculator) and how the degrees are found.<BR>\n" );
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document.write( "use x for theta<BR>\n" );
document.write( "2cos^2(x)-13cosx=-6<BR>\n" );
document.write( "2cos^2(x)-13cosx+6=0<BR>\n" );
document.write( "..<BR>\n" );
document.write( "let u=cosx<BR>\n" );
document.write( "u^2=cos^2(x)<BR>\n" );
document.write( "..<BR>\n" );
document.write( "2u^2-13u+6=0<BR>\n" );
document.write( "(2u-1)(u-6)=0<BR>\n" );
document.write( "..<BR>\n" );
document.write( "2u-1=0<BR>\n" );
document.write( "u=1/2=cosx<BR>\n" );
document.write( "x=60&#730;+360k, 300&#730;+360k, k=any integer<BR>\n" );
document.write( "..<BR>\n" );
document.write( "u-6=0<BR>\n" );
document.write( "u=6&#8800;cosx(no solution, (-1 &#8804; cosx &#8804; 1)\r<BR>\n" );
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document.write( "note: I don't understand what b) is asking. </SPAN>\n" );
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