document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=464327>Question 464327</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Prove that <BR>\n" );
document.write( " Cot y - cot x = sin (x-y) / sinx sin y<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 #318076 by </B><A HREF=/tutors/aboutme.mpl?userid=Gogonati><B>Gogonati(855)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Gogonati><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=Gogonati><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=318076\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We make identical transformations on the left side until reach an expression same \r<BR>\n" );
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document.write( "with the right side.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=coty-cotx=cosy%2Fsiny-cosx%2Fsinx=%0D%0A%0D%0A%28sinx%2Acosy-siny%2Acosx%29%2F%28sinx%2Asiny%29=sin%28x-y%29%2F%28sinx%2Asiny%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >. </SPAN>\n" );
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