document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=901323>Question 901323</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How to prove identities?<BR>\n" );
document.write( "like 1 + cos x / 1+ sec x =cos x. \r<BR>\n" );
document.write( "\n" );
document.write( "The equals mean identical.<BR>\n" );
document.write( "Update : 1- cos ^2 x/ 1+ sinx = sinx<BR>\n" );
document.write( "Update 2: cotx + tanx = cosec x . sec x\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "And also explain me some points that how should I handle identities next time! Please help me thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #546657 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=546657\">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=+%281+%2B+cos%28+x%29%29+%2F+%281%2B+1%2Fcos+%28x%29%29+=+cos+%28x%29cross%281%2Bcos%28+x%29%29%2Fcross%28cos%28x%29+%2B+1%29+=+cos+x ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );