document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=470625>Question 470625</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if sinx=1/3,  secy=5/3. fine the exact values of<BR>\n" );
document.write( "a) tan(x+y)<BR>\n" );
document.write( "b) cos (x-y)<BR>\n" );
document.write( "c) sin^2(x) + cos^2(y)\r<BR>\n" );
document.write( "\n" );
document.write( "can anyone show me how can i atleast start the question? method?<BR>\n" );
document.write( "thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #322863 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=322863\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> if sinx=1/3,  secy=5/3. fine the exact values of<BR>\n" );
document.write( "a) tan(x+y)<BR>\n" );
document.write( "b) cos (x-y)<BR>\n" );
document.write( "c) sin^2(x) + cos^2(y)<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "sin(x) = 1/3<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28x%29+=+sqrt%281+-+sin%5E2%28x%29%29+=+2sqrt%282%29%2F3 ALIGN=MIDDLE  ALT=\"cos%28x%29+=+sqrt%281+-+sin%5E2%28x%29%29+=+2sqrt%282%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "---------<BR>\n" );
document.write( "tan(x) = sin(x)/cos(x) = sqrt(2)/4<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "sec(y) = 5/3<BR>\n" );
document.write( "cos(y) = 3/5<BR>\n" );
document.write( "sin(y) = 4/5<BR>\n" );
document.write( "tan(y) = sin(y)/cos(y) = 4/3<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "a) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%28x%2By%29+=+%28tan%28x%29+%2B+tan%28y%29%29%2F%281+-+tan%28x%29%2Atan%28y%29%29 ALIGN=MIDDLE  ALT=\"tan%28x%2By%29+=+%28tan%28x%29+%2B+tan%28y%29%29%2F%281+-+tan%28x%29%2Atan%28y%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28sqrt%282%29%2F4+%2B+%284%2F3%29%29%2F%281+-+%284%2F3%29%2A%28sqrt%282%29%2F4%29%29 ALIGN=MIDDLE  ALT=\"%28sqrt%282%29%2F4+%2B+%284%2F3%29%29%2F%281+-+%284%2F3%29%2A%28sqrt%282%29%2F4%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28%283sqrt%282%29+%2B+16%29%2F12%29%2F%281+-+sqrt%282%29%2F3%29 ALIGN=MIDDLE  ALT=\"+%28%283sqrt%282%29+%2B+16%29%2F12%29%2F%281+-+sqrt%282%29%2F3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%283sqrt%282%29+%2B+16%29%2F%284%283+-+sqrt%282%29%29%29 ALIGN=MIDDLE  ALT=\"+%283sqrt%282%29+%2B+16%29%2F%284%283+-+sqrt%282%29%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%2854+%2B+25sqrt%282%29%29%2F28 ALIGN=MIDDLE  ALT=\"+%2854+%2B+25sqrt%282%29%29%2F28\"   DISABLED_style= \"max-width:90%; height:auto;\" > exactly<BR>\n" );
document.write( "=~ 3.191<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "b) cos (x-y)<BR>\n" );
document.write( "= cos(x)cos(y) + sin(x)sin(y)<BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282sqrt%282%29%2F3%29%2A%283%2F5%29+%2B+%281%2F3%29%2A%284%2F5%29 ALIGN=MIDDLE  ALT=\"%282sqrt%282%29%2F3%29%2A%283%2F5%29+%2B+%281%2F3%29%2A%284%2F5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2sqrt%282%29%2F5+%2B+4%2F15 ALIGN=MIDDLE  ALT=\"2sqrt%282%29%2F5+%2B+4%2F15\"   DISABLED_style= \"max-width:90%; height:auto;\" > exactly<BR>\n" );
document.write( "=~ 0.832352<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "c) sin^2(x) + cos^2(y)<BR>\n" );
document.write( "= 1/9 + 9/25<BR>\n" );
document.write( "= 106/225<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );