document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1064659>Question 1064659</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve for x between 0 and 2pi (both included):<BR>\n" );
document.write( "sin(4x) = cos(2x). <BR>\n" );
document.write( "I changed sin(4x) into sin(2x+2x) so that I could use the identity so it would then become sin 2xcos2x + cos2xsin2x = cos 2x. I collected the like terms to give: 2sin 2xcos2x = cos 2x. My question is if it's possible to divide both sides by cos 2x? Or would I lose some of the values by doing so? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #679738 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=679738\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  I collected the like terms to give: 2sin 2xcos2x = cos 2x. My question is if it's possible to divide both sides by cos 2x? Or would I lose some of the values by doing so?<BR>\n" );
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document.write( "don't divide by it.<BR>\n" );
document.write( "2sin 2xcos2x - cos 2x = 0<BR>\n" );
document.write( "cos(2x)*(2sin(2x) - 1) = 0<BR>\n" );
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document.write( "cos(2x) = 0<BR>\n" );
document.write( "sin(2x) = 1/2<BR>\n" );
document.write( "etc\r<BR>\n" );
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document.write( " </SPAN>\n" );
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