document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=770441>Question 770441</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I wanted to know how do you solve the question:<BR>\n" );
document.write( "if cos &#1256; = -1/3 using trig. identities find the exact value of sin(&#1256;-pi/2)\r<BR>\n" );
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document.write( "I am extremely lost, thank you in advance! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #469523 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=469523\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  wanted to know how do you solve the question:<BR>\n" );
document.write( "if cos &#1256; = -1/3 using trig. identities find the exact value of sin(&#1256;-pi/2) <BR>\n" );
document.write( "***<BR>\n" );
document.write( "use sin addition formula:<BR>\n" );
document.write( "sin(s-t)=sin s cos t-cos s sin t<BR>\n" );
document.write( "sin( &#1256;-&#960;/2)=sin &#1256;*cos(&#960;/2)-cos &#1256;*sin(&#960;/2)<BR>\n" );
document.write( "=sin &#1256;*0-cos &#1256;*1<BR>\n" );
document.write( "=-cos &#1256;=1/3<BR>\n" );
document.write( "sin(&#1256;-pi/2) =1/3 </SPAN>\n" );
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