document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1172167>Question 1172167</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the exact value of the trigonometric expression given that sin(u) = 12/13<BR>\n" );
document.write( "and cos(v) = − 8/17.(Both u and v are in Quadrant II.)<BR>\n" );
document.write( "                       cos(v − u) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #797099 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=797099\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Half angle formulas on Wikipedia covers this very well.<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "What is the point of having someone do them for you?<BR>\n" );
document.write( "====================<BR>\n" );
document.write( "PS There are a LOT of formulas. I remember some of them, but not all.<BR>\n" );
document.write( "There's no good reason to try to memorize all of them, and I doubt that anyone can.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );