document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=829183>Question 829183</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello, I was hoping you could help me verify this identity. I'm actually really good at the various identities and verifying them, but this problem is proving really complex for me and I just can't seem to get through it. I was hoping you could really show me step-by-step on how to get the answer for this problem.\r<BR>\n" );
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document.write( "It is:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28%28cos%28a%29-cos%28b%29%29%2F%28sin%28a%29%2Bsin%28b%29%29%29%2B%28%28sin%28a%29-sin%28b%29%29%2F%28cos%28a%29%2Bcos%28b%29%29%29=+0+ ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Thank you for your help in advance, I appreciate you taking the time to assist. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #499703 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=499703\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ((cos(a)-cos(b))/(sin(a)+sin(b)))+((sin(a)-sin(b))/(cos(a)+cos(b)))= 0<BR>\n" );
document.write( "==========<BR>\n" );
document.write( "numerator:: {[cos(a)+cos(b)][(cos(a)-cos(b)] + [sin(a)+sin(b)(sin(a)-sin(b)]}<BR>\n" );
document.write( "denominator: (sin(a)+sin(b))(cos(a)+cos(b))<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "numerator:: [cos^2(a)-cos^2(b)] + [sin^2(a)-sin^2(b)]<BR>\n" );
document.write( "denominator: no change<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "numerator:: [cos^2(a)+sin^2(a) -(cos^(b)+sin^2(b)]<BR>\n" );
document.write( "denominator:: no change<BR>\n" );
document.write( "----<BR>\n" );
document.write( "numerator:: [1 + 1] = 2<BR>\n" );
document.write( "denominator: no change<BR>\n" );
document.write( "------<BR>\n" );
document.write( "Equation after changes::<BR>\n" );
document.write( "2/(sin(a)+sin(b))(cos(a)+cos(b)) = 0<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "2 = 0<BR>\n" );
document.write( "If I have made no mistakes, there is no solution.<BR>\n" );
document.write( "==========================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "==========================  </SPAN>\n" );
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