document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=869639>Question 869639</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me! Thank you so much! Write the expression as the sine, cosine, or tangent of an angle: sin 49° cos 11° - cos 49° sin 11° </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #524327 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5328)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><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=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=524327\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I would use the trigonometric identity<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28A%2BB%29=sin%28A%29%2Acos%28B%29%2Bcos%28A%29%2Asin%28B%29 ALIGN=MIDDLE  ALT=\"sin%28A%2BB%29=sin%28A%29%2Acos%28B%29%2Bcos%28A%29%2Asin%28B%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and the fact that <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28-B%29=-sin%28B%29 ALIGN=MIDDLE  ALT=\"sin%28-B%29=-sin%28B%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > .<BR>\n" );
document.write( " <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%2849%5Eo%29cos%2811%5Eo%29-cos%2849%5Eo%29sin%2811%5Eo%29=sin%2849%5Eo%29cos%2811%5Eo%29%2Bcos%2849%5Eo%29%28-sin%2811%5Eo%29%29=sin%2849%5Eo%29cos%28-11%5Eo%29%2Bcos%2849%5Eo%29sin%28-11%5Eo%29=sin%2849%5Eo%2B%28-11%5Eo%29%29=highlight%28sin%2849%5Eo-11%5Eo%29%29=highlight%28sin%2838%5Eo%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " <BR>\n" );
document.write( "NOTE:<BR>\n" );
document.write( "Someone may say to use<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28A-B%29=sin%28A%29%2Acos%28B%29-cos%28A%29%2Asin%28B%29 ALIGN=MIDDLE  ALT=\"sin%28A-B%29=sin%28A%29%2Acos%28B%29-cos%28A%29%2Asin%28B%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > ,<BR>\n" );
document.write( "but that means one more formula.<BR>\n" );
document.write( "I do not believe in memorizing, so I just rediscover the formulas with a + sign each time I need one of them. </SPAN>\n" );
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