document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=782034>Question 782034</A>: <I><SPAN STYLE=\"word-break: break-all;\"> prove the trig identity<BR>\n" );
document.write( "[cos(alfa-beta)]/(sinalfa cosbeta)=cotalfa+tanbeta </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #476236 by </B><A HREF=/tutors/aboutme.mpl?userid=fcabanski><B>fcabanski(1391)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fcabanski><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=476236\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I'm using A for alpha and B for beta.<P><BR>\n" );
document.write( "cos (a-b) = cos(a)cos(b)+sin(a)sin(b)<P><BR>\n" );
document.write( "tan = sin/cos and cot=cos/sin<P><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28cos%28a%29cos%28b%29%2Bsin%28a%29sin%28b%29%29%2Fsin%28a%29cos%28b%29+=+cos%28a%29cos%28b%29%2Fsin%28a%29cos%28b%29+%2B+sin%28a%29sin%28b%29%2Fsin%28a%29cos%28b%29+=+cot%28a%29%2A1+%2B+1%2Atan%28b%29=+cot%28a%29%2Btan%28b%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );