document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=878332>Question 878332</A>: <I><SPAN STYLE=\"word-break: break-all;\"> tan &#952; = 1-cos2&#952; / sin2&#952;\r<BR>\n" );
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document.write( "Left Side<BR>\n" );
document.write( "tan &#952; = sin&#952;/cos&#952;\r<BR>\n" );
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document.write( "Left Side = sin&#952;/cos&#952;\r<BR>\n" );
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document.write( "Right side <BR>\n" );
document.write( "1-cos2&#952;/sin2&#952;\r<BR>\n" );
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document.write( "=1-(cos^2(&#952;)-sin^2(&#952;))/2sin&#952;cos&#952;\r<BR>\n" );
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document.write( "This is where I get lost, any help in proving this identity would be great thanks. \r<BR>\n" );
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document.write( "The question in word format is; tan (theta) = One minus cos two theta over sin two theta<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #529872 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=529872\">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=tan%28theta%29=%281-cos%282%2Atheta%29%29%2Fsin%282%2Atheta%29 ALIGN=MIDDLE  ALT=\"tan%28theta%29=%281-cos%282%2Atheta%29%29%2Fsin%282%2Atheta%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%282%2Atheta%29=cos%5E2%28theta%29-sin%5E2%28theta%29 ALIGN=MIDDLE  ALT=\"cos%282%2Atheta%29=cos%5E2%28theta%29-sin%5E2%28theta%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1-cos%282%2Atheta%29=1-cos%5E2%28theta%29%2Bsin%5E2%28theta%29 ALIGN=MIDDLE  ALT=\"1-cos%282%2Atheta%29=1-cos%5E2%28theta%29%2Bsin%5E2%28theta%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1-cos%282%2Atheta%29=sin%5E2%28theta%29%2Bsin%5E2%28theta%29 ALIGN=MIDDLE  ALT=\"1-cos%282%2Atheta%29=sin%5E2%28theta%29%2Bsin%5E2%28theta%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1-cos%282%2Atheta%29=2sin%5E2%28theta%29 ALIGN=MIDDLE  ALT=\"1-cos%282%2Atheta%29=2sin%5E2%28theta%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%282%2Atheta%29=2cos%28theta%29sin%28theta%29 ALIGN=MIDDLE  ALT=\"sin%282%2Atheta%29=2cos%28theta%29sin%28theta%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%28theta%29=%282sin%5E2%28theta%29%29%2F%282cos%28theta%29sin%28theta%29%29 ALIGN=MIDDLE  ALT=\"tan%28theta%29=%282sin%5E2%28theta%29%29%2F%282cos%28theta%29sin%28theta%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%28theta%29=sin%28theta%29%2Fcos%28theta%29 ALIGN=MIDDLE  ALT=\"tan%28theta%29=sin%28theta%29%2Fcos%28theta%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%28theta%29=tan%28theta%29 ALIGN=MIDDLE  ALT=\"tan%28theta%29=tan%28theta%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "True.<BR>\n" );
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