document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=512069>Question 512069</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the exact value of this expression:\r<BR>\n" );
document.write( "\n" );
document.write( "cos ( tan^1 ( 1/4 ) ) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #342507 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=342507\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the exact value of this expression: <BR>\n" );
document.write( "cos ( tan^-1 ( 1/4 ) )<BR>\n" );
document.write( "====<BR>\n" );
document.write( "Since tan = 1/4, y = 1 and x = 4<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Then r = sqrt[1^2+4^2] = sqrt(17)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "So, cos = x/r = 4/sqrt(17)<BR>\n" );
document.write( "==============================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "--------------- </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );