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 #831865 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=831865\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "given:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin+%28x%29=+2%2F7 ALIGN=MIDDLE  ALT=\"sin+%28x%29=+2%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin+%28y%29=+-1%2F5 ALIGN=MIDDLE  ALT=\"sin+%28y%29=+-1%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28x%29=+3sqrt%285%29%2F7 ALIGN=MIDDLE  ALT=\"cos%28x%29=+3sqrt%285%29%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos+%28y%29=+-2sqrt%286%29%2F5 ALIGN=MIDDLE  ALT=\"cos+%28y%29=+-2sqrt%286%29%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
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document.write( "Find \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28x%2By%29=cos%28y%29+sin%28x%29+%2B+cos%28x%29+sin%28y%29 ALIGN=MIDDLE  ALT=\"sin%28x%2By%29=cos%28y%29+sin%28x%29+%2B+cos%28x%29+sin%28y%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28x%2By%29=%28+-2sqrt%286%29%2F+5%29+%282%2F7%29+%2B+%283sqrt%285%29%2F7%29%28-1%2F5%29 ALIGN=MIDDLE  ALT=\"sin%28x%2By%29=%28+-2sqrt%286%29%2F+5%29+%282%2F7%29+%2B+%283sqrt%285%29%2F7%29%28-1%2F5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28x%2By%29=-%284sqrt%286%29%29%2F35-%283sqrt%285%29%29%2F35 ALIGN=MIDDLE  ALT=\"sin%28x%2By%29=-%284sqrt%286%29%29%2F35-%283sqrt%285%29%29%2F35\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28x%2By%29=-3%2F%287sqrt%285%29%29+-+%284sqrt%286%29%29%2F35 ALIGN=MIDDLE  ALT=\"sin%28x%2By%29=-3%2F%287sqrt%285%29%29+-+%284sqrt%286%29%29%2F35\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28x%2By%29=cos%28x%29+cos%28y%29+-+sin%28x%29+sin%28y%29 ALIGN=MIDDLE  ALT=\"cos%28x%2By%29=cos%28x%29+cos%28y%29+-+sin%28x%29+sin%28y%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28x%2By%29=%283sqrt%285%29%2F7%29+%28-2sqrt%286%29%2F+5%29+-+%282%2F7%29+%28-1%2F5%29 ALIGN=MIDDLE  ALT=\"cos%28x%2By%29=%283sqrt%285%29%2F7%29+%28-2sqrt%286%29%2F+5%29+-+%282%2F7%29+%28-1%2F5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28x%2By%29=-%286sqrt%2830%29%29%2F35%2B2%2F35 ALIGN=MIDDLE  ALT=\"cos%28x%2By%29=-%286sqrt%2830%29%29%2F35%2B2%2F35\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28x%2By%29=%282%2F35%29+%281+-+3sqrt%2830%29%29 ALIGN=MIDDLE  ALT=\"cos%28x%2By%29=%282%2F35%29+%281+-+3sqrt%2830%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+tan%28x%2By%29=sin%28x+%2B+y%29%2Fcos%28x+%2B+y%29 ALIGN=MIDDLE  ALT=\"+tan%28x%2By%29=sin%28x+%2B+y%29%2Fcos%28x+%2B+y%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%28x%2By%29=%28-3%2F%287sqrt%285%29%29+-+%284sqrt%286%29%29%2F35%29%2F%28%282%2F35%29+%281+-+3sqrt%2830%29%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%28x%2By%29=%281%2F538%29+%2875sqrt%285%29+%2B+49sqrt%286%29%29 ALIGN=MIDDLE  ALT=\"tan%28x%2By%29=%281%2F538%29+%2875sqrt%285%29+%2B+49sqrt%286%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%28x%2By%29=%281%2F538%29+sqrt%283+%2814177+%2B+2450+sqrt%2830%29%29%29 ALIGN=MIDDLE  ALT=\"tan%28x%2By%29=%281%2F538%29+sqrt%283+%2814177+%2B+2450+sqrt%2830%29%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
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document.write( "approximately:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28x%2By%29=-0.4716 ALIGN=MIDDLE  ALT=\"sin%28x%2By%29=-0.4716\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28x%2By%29=-0.8818 ALIGN=MIDDLE  ALT=\"cos%28x%2By%29=-0.8818\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%28x%2By%29=-0.4716%2F-0.8818=0.53482 ALIGN=MIDDLE  ALT=\"tan%28x%2By%29=-0.4716%2F-0.8818=0.53482\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );