document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=428088>Question 428088</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find the exact value of cos 225 degrees </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #299381 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=299381\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> find the exact value of cos 225 degrees\r<BR>\n" );
document.write( "\n" );
document.write( "..\r<BR>\n" );
document.write( "\n" );
document.write( "cos(225)=cos(45+180)<BR>\n" );
document.write( "             =cos45cos180+sin45sin180<BR>\n" );
document.write( "             =sqrt(2)/2*(-1)+sqrt(2)*(0)<BR>\n" );
document.write( "             =-sqrt(2)/2+0<BR>\n" );
document.write( "             =-sqrt(2)/2  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );