document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1198298>Question 1198298</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose sin x= 2/7, sin y= -1/5, cos x= 3 √5/7, cos y= -2 √6/ 5<BR>\n" );
document.write( "Find sin(x+y), cos(x+y), tan(x+y) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #831864 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=831864\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Suppose sin x= 2/7, sin y= -1/5, cos x= 3 √5/7, cos y= -2 √6/ 5<BR>\n" );
document.write( "Find sin(x+y), cos(x+y), tan(x+y)<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "Look up \"Half-angle formulas\" on Wikipedia </SPAN>\n" );
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