document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=775183>Question 775183</A>: <I><SPAN STYLE=\"word-break: break-all;\"> write the expression as a single real number. Do not use decimal approximations<BR>\n" );
document.write( "sin(pie/6)cos(pie/2)-cos(pie/60)sin(pie/2) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #472787 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=472787\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> write the expression as a single real number. Do not use decimal approximations<BR>\n" );
document.write( "sin(pie/6)cos(pie/2)-cos(pie/60)sin(pie/2)<BR>\n" );
document.write( "I believe you meant pi/6 instead of pi/60 for the 3rd term<BR>\n" );
document.write( "use sin addition formula: sin(s-t)=sin s cos t-cos s sin t<BR>\n" );
document.write( "sin(pie/6)cos(pie/2)-cos(pie/6)sin(pie/2)=sin(&#960;/6-&#960;/2)=sin(&#960;/6-3&#960;/6)=sin(-&#960;/3)=-&#8730;3/2 </SPAN>\n" );
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