document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1179266>Question 1179266</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 2tanx-sin2x/2sin^2x = tanx\r<BR>\n" );
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document.write( "Prove the identity \r<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 #808784 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13206)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=808784\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "The equation<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2Atan%28x%29-sin%282x%29%2F2sin%28x%29%5E2=tan%28x%29 ALIGN=MIDDLE  ALT=\"2%2Atan%28x%29-sin%282x%29%2F2sin%28x%29%5E2=tan%28x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "is not an identity.<br><BR>\n" );
document.write( "Sorry to be picky....<br><BR>\n" );
document.write( "But if your studies of math have progressed to the point where you are proving trig identities, then you should know by now that sometimes parentheses are required to make things right.<br><BR>\n" );
document.write( "Re-post, showing the correct identity.<br><BR>\n" );
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