document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=980016>Question 980016</A>: <I><SPAN STYLE=\"word-break: break-all;\"> cos(180-theta)<BR>\n" );
document.write( "cos(270-theta)<BR>\n" );
document.write( "cos(360-theta)<BR>\n" );
document.write( "of sum and difference of two angle.So can u please give me proof for the above questions. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #601219 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=601219\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> cos(180-theta)<BR>\n" );
document.write( "cos(270-theta)<BR>\n" );
document.write( "cos(360-theta)<BR>\n" );
document.write( "of sum and difference of two angle.<BR>\n" );
document.write( "----------<BR>\n" );
document.write( "cos(A-B) = cos(A)*cos(B) + sin(A)*sin(B)<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "cos(180-t) = cos(180)*cos(t) + sin(180)*sin(t)<BR>\n" );
document.write( "= -1*cos(t) + 0<BR>\n" );
document.write( "= -cos(t)<BR>\n" );
document.write( "=================<BR>\n" );
document.write( "Do the others the same way.\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );