document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=930585>Question 930585</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the half-angle identities to find the exact value of the trigonometric expression.\r<BR>\n" );
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document.write( "tan 22.5° </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #565125 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=565125\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%28x%2F2%29+=+tan%28x%29%2F%281+%2B+sqrt%281+%2B+tan%5E2%28x%29%29%29 ALIGN=MIDDLE  ALT=\"tan%28x%2F2%29+=+tan%28x%29%2F%281+%2B+sqrt%281+%2B+tan%5E2%28x%29%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >  for -pi/2 < x < pi/2<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%2822.5%29+=+1%2F%281+%2B+sqrt%282%29%29+=+sqrt%282%29+-+1 ALIGN=MIDDLE  ALT=\"tan%2822.5%29+=+1%2F%281+%2B+sqrt%282%29%29+=+sqrt%282%29+-+1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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