document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1063062>Question 1063062</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the exact value of sin(-7pi/12) and how do you find it? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #678078 by </B><A HREF=/tutors/aboutme.mpl?userid=math_helper><B>math_helper(2461)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=math_helper><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=math_helper><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=678078\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+sin%28-7pi%2F12%29+=+-sin%287pi%2F12%29+ ALIGN=MIDDLE  ALT=\"+sin%28-7pi%2F12%29+=+-sin%287pi%2F12%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >    (because sin(-a) = -sin(a))<BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-sin%283pi%2F12+%2B+4pi%2F12%29+ ALIGN=MIDDLE  ALT=\"+-sin%283pi%2F12+%2B+4pi%2F12%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-sin%28pi%2F4+%2B+pi%2F3%29+ ALIGN=MIDDLE  ALT=\"+-sin%28pi%2F4+%2B+pi%2F3%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "—<BR>\n" );
document.write( "Use  sin(a+b) = sin(a)cos(b) + cos(a)sin(b) :<BR>\n" );
document.write( "--<BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-+%28+sin%28pi%2F4%29%2Acos%28pi%2F3%29+%2B+cos%28pi%2F4%29%2Asin%28pi%2F3%29+%29+ ALIGN=MIDDLE  ALT=\"+-+%28+sin%28pi%2F4%29%2Acos%28pi%2F3%29+%2B+cos%28pi%2F4%29%2Asin%28pi%2F3%29+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "—<BR>\n" );
document.write( "Use these 3 facts:<BR>\n" );
document.write( "       <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+sin%28pi%2F4%29+=+cos%28pi%2F4%29+=+sqrt%282%29%2F2+ ALIGN=MIDDLE  ALT=\"+sin%28pi%2F4%29+=+cos%28pi%2F4%29+=+sqrt%282%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "       <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+cos%28pi%2F3%29+=+1%2F2+ ALIGN=MIDDLE  ALT=\"+cos%28pi%2F3%29+=+1%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "       <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+sin%28pi%2F3%29+=+sqrt%283%29%2F2+ ALIGN=MIDDLE  ALT=\"+sin%28pi%2F3%29+=+sqrt%283%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "—<BR>\n" );
document.write( "Continuing…<BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-+%28++%28sqrt%282%29%2F2%29%2A%281%2F2%29+%2B+%28sqrt%282%29%2F2%29%2A%28sqrt%283%29%2F2%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=++-+%28sqrt%282%29%2F2%29+%281%2F2+%2B+sqrt%283%29%2F2%29+ ALIGN=MIDDLE  ALT=\"++-+%28sqrt%282%29%2F2%29+%281%2F2+%2B+sqrt%283%29%2F2%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=+highlight%28+-+%28sqrt%282%29%2F4%29%281%2Bsqrt%283%29%29%29+ ALIGN=MIDDLE  ALT=\"+highlight%28+-+%28sqrt%282%29%2F4%29%281%2Bsqrt%283%29%29%29+\"   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" );