document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1062427>Question 1062427</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In the square ABCD. AE is an angle bisector of BAC, and EF is perpendicular to AC. If AB = 4 cm, then the length of AE is ..... my answer is 3 root 2. But the answer key has different result. Please help </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #677345 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=677345\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> AE^2 = AF^2 + EF^2<BR>\n" );
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document.write( "AF = (1/2) * length of diagonal = (1/2) * (4 * square root(2)) = 2 * square root(2)<BR>\n" );
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document.write( "tangent(22.5) = EF / (2 * square root(2)) <BR>\n" );
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document.write( "EF = (0.414) * (2 * square root(2)) = 0.828 * square root(2)<BR>\n" );
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document.write( "Note that tangent(22.5) = 0.414<BR>\n" );
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document.write( "AE^2 = (2 * square root(2))^2 + (0.828 * square root (2))^2 = 9.37<BR>\n" );
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document.write( "AE = 3.06 cm<BR>\n" );
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