document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=454350>Question 454350</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do you solve:\r<BR>\n" );
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document.write( "sin^2(x)+cos(2x)-cos(x)=0 \r<BR>\n" );
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document.write( "I know that cos(2x) can be equal to cos^2(x)-sin^2(x), or it can be equal to 2cos^2(x)-1, or it can be equal to 1-2sin^2(x)\r<BR>\n" );
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document.write( "My math teacher told us to use the formula that has the trig-word in it that is in the equation, but since both sin and cos are in the equation, I'm not sure what to use. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #312011 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=312011\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> if you use cos^2(x)-sin^2(x) then you will have sin^2(x)+cos^2(x)-sin^2(x)<BR>\n" );
document.write( "which eliminates sin completely.<BR>\n" );
document.write( "leaving you cos^(2x)-cos(x)\r<BR>\n" );
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document.write( " </SPAN>\n" );
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