document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=870251>Question 870251</A>: <I><SPAN STYLE=\"word-break: break-all;\"> use an angle sum identity to verify the identity cos 2 theta = 2 cos^2 theta -1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #524762 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=524762\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> use an angle sum identity to verify the identity cos 2 theta = 2 cos^2 theta -1<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%282theta%29=cos%28theta%2Btheta%29=cos%28theta%29%2Acos%28theta%29-sin%28theta%29%2Asin%28theta%29=cos%5E2%28theta%29-sin%5E2%28theta%29=cos%5E2%28theta%29-%281-cos%5E2%28theta%29%29=2cos%5E2%28theta%29-1 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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