document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=860116>Question 860116</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if cos 8 alpha = sin alpha and 8 alpha < 90 degree then the value of tan 6 alpha is  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #518244 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=518244\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> if cos (8a) = sin(a) and 8a < 90 degree <BR>\n" );
document.write( "then the value of tan(6a) is ?<BR>\n" );
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document.write( "cos(8a) = sin((pi/2)-a) = sin(a)<BR>\n" );
document.write( "So, (pi/2)-a = a<BR>\n" );
document.write( "2a = pi/2<BR>\n" );
document.write( "a = pi/4<BR>\n" );
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document.write( "tan(6a) = tan(6(pi/4)) = tan(3/2)pi) is undefined<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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