document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=520091>Question 520091</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Prove the following equations is an identity.\r<BR>\n" );
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document.write( "csc f/ cos f - cos f/sin f = tan f </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #346183 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=346183\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Prove the following equations is an identity. <BR>\n" );
document.write( "csc f/ cos f - cos f/sin f = tan f<BR>\n" );
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document.write( "start with left side<BR>\n" );
document.write( "csc f/ cos f - cos f/sin f<BR>\n" );
document.write( "LCD: sin cos<BR>\n" );
document.write( "(csc sin-cos^2)/sin cos<BR>\n" );
document.write( "(1-cos^2)/sin cos<BR>\n" );
document.write( "sin^2/sin cos=sin/cos=tan<BR>\n" );
document.write( "verified:<BR>\n" );
document.write( "left side=right side </SPAN>\n" );
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