document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=840332>Question 840332</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find cos(15pi/4) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #506183 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=506183\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find cos(15pi/4)<BR>\n" );
document.write( "15&#960;/4=3&#960;+3&#960;/4<BR>\n" );
document.write( "This equals to a reference angle of &#960;/4 in quadrant IV in which cos>0<BR>\n" );
document.write( "cos(15&#960;/4)=cos(&#960;/4)=&#8730;2/2 </SPAN>\n" );
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