document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=93975>Question 93975</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Prove the following identity:\r<BR>\n" );
document.write( "\n" );
document.write( "sin(2t) = 2 * ((cot(t))/(1 +cot^2(t))) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #68431 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=68431\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Lets work on the right side of the equation:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282cot%28t%29%2F%281%2Bcot%5E2%28t%29%29%29=2cot%28t%29%2Fcsc%5E2%28t%29=2cot%28t%29%2Asin%5E2%28t%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2cot%28t%29%2Asin%5E2%28t%29=%282cos%28t%29%2Fsin%28t%29%29%2Asin%5E2%28t%29=2cos%28t%29%2Asin%28t%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2cos%28t%29%2Asin%28t%29=sin%282t%29 ALIGN=MIDDLE  ALT=\"2cos%28t%29%2Asin%28t%29=sin%282t%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Voila! The left side equals the right.<BR>\n" );
document.write( "Ed Jones </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );