document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=207429>Question 207429</A>: <I><SPAN STYLE=\"word-break: break-all;\"> prove that tan x (cot x + tan x ) = sec^2 x </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #159483 by </B><A HREF=/tutors/aboutme.mpl?userid=Edwin+McCravy><B>Edwin McCravy(20064)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Edwin+McCravy><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=Edwin+McCravy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=159483\">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=Tan%28x%29+%28Cot%28x%29+%2B+Tan%28x%29+%29+=+Sec%5E2x ALIGN=MIDDLE  ALT=\"Tan%28x%29+%28Cot%28x%29+%2B+Tan%28x%29+%29+=+Sec%5E2x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Distribute to remove the parentheses:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Tan%28x%29Cot%28x%29+%2B+Tan%5E2x++=+Sec%5E2x ALIGN=MIDDLE  ALT=\"Tan%28x%29Cot%28x%29+%2B+Tan%5E2x++=+Sec%5E2x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Replace <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Cot%28x%29 ALIGN=MIDDLE  ALT=\"Cot%28x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2FTan%28x%29 ALIGN=MIDDLE  ALT=\"1%2FTan%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=+Tan%28x%29+%281%2FTan%28x%29%29+%2B+Tan%5E2x++=+Sec%5E2x ALIGN=MIDDLE  ALT=\"+Tan%28x%29+%281%2FTan%28x%29%29+%2B+Tan%5E2x++=+Sec%5E2x\"   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=cross%28Tan%28x%29%29+%281%2Fcross%28Tan%28x%29%29%29+%2B+Tan%5E2x++=+Sec%5E2x ALIGN=MIDDLE  ALT=\"cross%28Tan%28x%29%29+%281%2Fcross%28Tan%28x%29%29%29+%2B+Tan%5E2x++=+Sec%5E2x\"   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%2BTan%5E2x=+Sec%5E2x ALIGN=MIDDLE  ALT=\"1%2BTan%5E2x=+Sec%5E2x\"   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=Sec%5E2x=Sec%5E2x ALIGN=MIDDLE  ALT=\"Sec%5E2x=Sec%5E2x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Edwin</pre> </SPAN>\n" );
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