document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=868319>Question 868319</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please prove\r<BR>\n" );
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document.write( "sin^2x + cos^4x = cos^2x + sin^4x </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #523480 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=523480\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> sin^2x + cos^4x = cos^2x + sin^4x<BR>\n" );
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document.write( "Rearrange to get::<BR>\n" );
document.write( "cos^2(x)-sin^2(x) = cos^4(x)-sin^4(x)<BR>\n" );
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document.write( "Divide both sides by cos^2(x) - sin^2(x) to get:<BR>\n" );
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document.write( "1 = cos^2(x)+sin^2(x)<BR>\n" );
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document.write( "1 = 1<BR>\n" );
document.write( "===================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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