document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=984271>Question 984271</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many solutions does cos(4x) = .4 have? Please explain how to do this problem?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #605057 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=605057\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hi there,<BR>\n" );
document.write( "The original two solutions for<BR>\n" );
document.write( "cos(4x) = 0.4<BR>\n" );
document.write( "= 66.4 and 293.6 (360 - 66.4)<BR>\n" );
document.write( "Because you have 4x after the cos<BR>\n" );
document.write( "then 360 degrees must be added to<BR>\n" );
document.write( "66.4 and 293.6 three times.<BR>\n" );
document.write( "Therefore:<BR>\n" );
document.write( "4x = 66.4, 293.6, 426.4, 653.6,<BR>\n" );
document.write( "786.4, 1013.6, 1146.4, 1373.6.<BR>\n" );
document.write( "Now to find what 'x' =<BR>\n" );
document.write( "Divide each of the solutions by 4<BR>\n" );
document.write( "x = 16.6, 73.4, 106.6, 163.4,<BR>\n" );
document.write( "196.6, 253.4, 286.6, 343.4.<BR>\n" );
document.write( "You would give these solutions<BR>\n" );
document.write( "for  0 < x < 360.<BR>\n" );
document.write( "Hope this helps you. :-) </SPAN>\n" );
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