document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=147846>Question 147846</A>: <I><SPAN STYLE=\"word-break: break-all;\"> trig identities- i need help proving that this identity is true \r<BR>\n" );
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document.write( "(sin2x/ 1+cos2x) * (cosx/1+cosx) = tan(x/2) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #108232 by </B><A HREF=/tutors/aboutme.mpl?userid=Nate><B>Nate(3500)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Nate><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=108232\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28+sin%282x%29+%2F+%28+1+%2B+cos%282x%29+%29+%29+%2A+%28+cos%28x%29+%2F+%28+1+%2B+cos%28x%29+%29+%29+=+tan%28x%2F2%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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