document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1152016>Question 1152016</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can you prove the following identity algebraically.\r<BR>\n" );
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document.write( "Sec x — cos x = sin x tan x </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #773901 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=773901\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> sec (x) - cos( x) = sin( x) tan( x)\r<BR>\n" );
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document.write( "manipulate left side:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sec+%28x%29+-+cos%28+x%29 ALIGN=MIDDLE  ALT=\"sec+%28x%29+-+cos%28+x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > ...................use identity <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sec+%28x%29+=1%2Fcos%28x%29 ALIGN=MIDDLE  ALT=\"sec+%28x%29+=1%2Fcos%28x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2Fcos%28x%29+-+cos%28+x%29 ALIGN=MIDDLE  ALT=\"1%2Fcos%28x%29+-+cos%28+x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >......common denominator is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28x%29 ALIGN=MIDDLE  ALT=\"cos%28x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2Fcos%28x%29+-+cos%5E2%28+x%29%2Fcos%28x%29 ALIGN=MIDDLE  ALT=\"1%2Fcos%28x%29+-+cos%5E2%28+x%29%2Fcos%28x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281+-+cos%5E2%28+x%29%29%2Fcos%28x%29 ALIGN=MIDDLE  ALT=\"%281+-+cos%5E2%28+x%29%29%2Fcos%28x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.......use identity <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%5E2%28x%29%2Bcos%5E2%28x%29=1 ALIGN=MIDDLE  ALT=\"sin%5E2%28x%29%2Bcos%5E2%28x%29=1\"   DISABLED_style= \"max-width:90%; height:auto;\" >=><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1+-+cos%5E2%28+x%29=sin%5E2%28x%29 ALIGN=MIDDLE  ALT=\"1+-+cos%5E2%28+x%29=sin%5E2%28x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%5E2%28+x%29%2Fcos%28x%29 ALIGN=MIDDLE  ALT=\"sin%5E2%28+x%29%2Fcos%28x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >......write <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%5E2%28+x%29 ALIGN=MIDDLE  ALT=\"sin%5E2%28+x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > as <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28+x%29%2Asin%28+x%29 ALIGN=MIDDLE  ALT=\"sin%28+x%29%2Asin%28+x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28+sin%28+x%29%2Ahighlight%28sin%28+x%29%29%29%2Fhighlight%28cos%28x%29%29 ALIGN=MIDDLE  ALT=\"%28+sin%28+x%29%2Ahighlight%28sin%28+x%29%29%29%2Fhighlight%28cos%28x%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.......use identity <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28x%29%2Fcos%28x%29=tan%28x%29 ALIGN=MIDDLE  ALT=\"sin%28x%29%2Fcos%28x%29=tan%28x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+sin%28+x%29%2Atan%28+x%29 ALIGN=MIDDLE  ALT=\"+sin%28+x%29%2Atan%28+x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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