document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1131555>Question 1131555</A>: <I><SPAN STYLE=\"word-break: break-all;\">  Prove the identity:<BR>\n" );
document.write( "(tanx+1)^2=(1+2 sinx cosx)/(cos^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 #748224 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=748224\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28tan%28x%29%2B1%29%5E2=%281%2B2sin%28x%29%2A+cos%28x%29%29%2F%28cos%5E2%28x%29%29+ ALIGN=MIDDLE  ALT=\"%28tan%28x%29%2B1%29%5E2=%281%2B2sin%28x%29%2A+cos%28x%29%29%2F%28cos%5E2%28x%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "start with:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28tan%28x%29%2B1%29%5E2 ALIGN=MIDDLE  ALT=\"%28tan%28x%29%2B1%29%5E2\"   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%5E2%28x%29%2B2tan%28x%29%2B1 ALIGN=MIDDLE  ALT=\"tan%5E2%28x%29%2B2tan%28x%29%2B1\"   DISABLED_style= \"max-width:90%; height:auto;\" >.......<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%28x%29=sin%28x%29%2Fcos%28x%29 ALIGN=MIDDLE  ALT=\"tan%28x%29=sin%28x%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=sin%5E2%28x%29%2Fcos%5E2%28x%29%2B2%28sin%28x%29%2Fcos%28x%29%29%2B1 ALIGN=MIDDLE  ALT=\"sin%5E2%28x%29%2Fcos%5E2%28x%29%2B2%28sin%28x%29%2Fcos%28x%29%29%2B1\"   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%28x%29%2Fcos%5E2%28x%29%2B2%28%28sin%28x%29cos%5E2%28x%29%29%2Fcos%5E2%28x%29%29%2Bcos%5E2%28x%29%2Fcos%5E2%28x%29 ALIGN=MIDDLE   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=%28sin%5E2%28x%29%2B2sin%28x%29cos%5E2%28x%29%2Bcos%5E2%28x%29%29%2Fcos%5E2%28x%29 ALIGN=MIDDLE  ALT=\"%28sin%5E2%28x%29%2B2sin%28x%29cos%5E2%28x%29%2Bcos%5E2%28x%29%29%2Fcos%5E2%28x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.......since <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;\" >, we have\r<BR>\n" );
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document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281%2B2sin%28x%29cos%5E2%28x%29%29%2Fcos%5E2%28x%29 ALIGN=MIDDLE  ALT=\"%281%2B2sin%28x%29cos%5E2%28x%29%29%2Fcos%5E2%28x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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