document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1059154>Question 1059154</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Need help evaluating this expression.<BR>\n" );
document.write( "tan(90 - &#8854;) *tan(&#8854;)*sec(&#8854;)<BR>\n" );
document.write( "A.) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1+ ALIGN=MIDDLE  ALT=\"+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "B.) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2+ ALIGN=MIDDLE  ALT=\"+2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "C.) sec{&#8854;)<BR>\n" );
document.write( "D.) cot(&#8854;)<BR>\n" );
document.write( "Thanks. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #674245 by </B><A HREF=/tutors/aboutme.mpl?userid=solve_for_x><B>solve_for_x(190)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solve_for_x><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=674245\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Since tan(x) = sin(x) / cos(x), and sin(90 - x) = cos(x), and cos(90 - x) = sin(x), the<BR>\n" );
document.write( "first term of the expression can be rewritten as:\r<BR>\n" );
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document.write( "tan(90 - &#8854;) = sin(90 - &#8854;)/cos(90 - &#8854;) = cos(&#8854;)/sin(&#8854;)\r<BR>\n" );
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document.write( "Substituting this in place of tan(90 - &#8854;) then gives:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28cos%28theta%29%2Fsin%28theta%29%29+%2A+tan%28theta%29+%2A+sec%28theta%29 ALIGN=MIDDLE  ALT=\"%28cos%28theta%29%2Fsin%28theta%29%29+%2A+tan%28theta%29+%2A+sec%28theta%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=%28cos%28theta%29%2Fsin%28theta%29%29+%2A+%28sin%28theta%29%2Fcos%28theta%29%29+%2A+sec%28theta%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "= sec(&#8854;) </SPAN>\n" );
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