document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=41125>Question 41125</A>: <I><SPAN STYLE=\"word-break: break-all;\"> (cos^3(A/2)-3cot(A/2))/(3cot^2(A/2)-1)=cot(A) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #26559 by </B><A HREF=/tutors/aboutme.mpl?userid=venugopalramana><B>venugopalramana(3286)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=venugopalramana><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.geocities.com/venugopalramana/FREE_MATHS_ASSISTANCE.html valign=middle><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=26559\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (cos^3(A/2)-3cot(A/2))/(3cot^2(A/2)-1)=cot(A)<BR>\n" );
document.write( "ANGLES ON LHS ARE A/3 AND NOT A/2<BR>\n" );
document.write( "IF YOU KNOW TAN(3X) FORMULA THIS IS A STRAIGHT APPLICATION<BR>\n" );
document.write( "TAN(3X)={3TAN(X)-TAN^3(X)}/{1-3TAN^2(X)}<BR>\n" );
document.write( "HENCE<BR>\n" );
document.write( "COT(3X)={1-3TAN^2(X)}/{3TAN(X)-TAN^3(X)}...PUT TAN(X)=1/COT(X)...WEB GET<BR>\n" );
document.write( "COT(3X)={COT^2(X)-3}COT^3(X)/{3COT^2(X)-1}COT^2(X)<BR>\n" );
document.write( "={COT^3(X)-3COT(X)}/{3COT^2(X)-1} <BR>\n" );
document.write( "PUT 3X=A...WE GET<BR>\n" );
document.write( "COT(A)={COT^(A/3)-3COT(A/3)}/{3COT^2(A/3)-1}<BR>\n" );
document.write( "IF YOU DONT KNOW TAN(3X) FORMULA...THEN WRITE<BR>\n" );
document.write( "TAN(3X)=TAN(2X+X)={TAN(2X)+TAN(X)}/{1-TAN(2X)TAN(X)...AGAIN EXPAND TAN(2X)=2TAN(X)/(1-TAN^2(X)....ETC... </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );