document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=187494>Question 187494</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I had a test today, and could not crack this problem I really would appreciate the help so I can understand it later on.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Prove:<BR>\n" );
document.write( "cotx*cosx=cotx-cosx\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "first i found a common denominator, but after that i was stuck. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #140531 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=140531\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Prove:<BR>\n" );
document.write( "cotx*cosx=cotx-cosx <BR>\n" );
document.write( "I don't think it is equal.<BR>\n" );
document.write( "cos/tan = cot - cos<BR>\n" );
document.write( "cos = 1 - cos*tan<BR>\n" );
document.write( "cos = 1 - sin  That is not true. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );