document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1024158>Question 1024158</A>: <I><SPAN STYLE=\"word-break: break-all;\"> For all the values of theta for which the expressions are defined, prove the following is an identity: (cos theta sin theta+cos theta)/cos^2theta=tan theta +sec theta<BR>\n" );
document.write( "I don't quite understand how to prove it is an identity. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #639732 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=639732\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Prove that you can go from the left side and derive the right side or vice versa.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28cos%28theta%29%2Asin%28theta%29%2Bcos%28theta%29%29%2Fcos%5E2%28theta%29=tan%28theta%29%2Bsec%28theta%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28sin%28theta%29%2B1%29%2Fcos%28theta%29=tan%28theta%29%2Bsec%28theta%29 ALIGN=MIDDLE  ALT=\"%28sin%28theta%29%2B1%29%2Fcos%28theta%29=tan%28theta%29%2Bsec%28theta%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28theta%29%2Fcos%28theta%29%2B1%2Fcos%28theta%29=tan%28theta%29%2Bsec%28theta%29 ALIGN=MIDDLE  ALT=\"sin%28theta%29%2Fcos%28theta%29%2B1%2Fcos%28theta%29=tan%28theta%29%2Bsec%28theta%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%28theta%29%2Bsec%28theta%29=tan%28theta%29%2Bsec%28theta%29 ALIGN=MIDDLE  ALT=\"tan%28theta%29%2Bsec%28theta%29=tan%28theta%29%2Bsec%28theta%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "True for all values of theta, so the original statement is also true for all values of theta.\r<BR>\n" );
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