document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1117519>Question 1117519</A>: <I><SPAN STYLE=\"word-break: break-all;\"> From an observation tower that overlooks a runway, the angles of depression of Point A, on one side of the runway, and point B, on the opposite side of the runway are, 6 degrees and 13 degrees respectively. The points and the tower are in the same vertical plane and the distance from A to B is 1.1 km. Determine the height of the tower </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #732663 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=732663\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x, from A to tower base<BR>\n" );
document.write( "1.1-x, from B to tower base\r<BR>\n" );
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document.write( "y, tower height\r<BR>\n" );
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document.write( "Base, T, A, and B form two right triangles, sharing height y.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28y%2Fx=tan%286%29%2Cy%2F%281.1-x%29=tan%2813%29%29 ALIGN=MIDDLE  ALT=\"system%28y%2Fx=tan%286%29%2Cy%2F%281.1-x%29=tan%2813%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Solve for y.\r<BR>\n" );
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document.write( ".<BR>\n" );
document.write( "a few algebra steps<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=%281.1%2Atan%2813%29tan%286%29%29%2F%28tan%286%29%2Btan%2813%29%29 ALIGN=MIDDLE  ALT=\"y=%281.1%2Atan%2813%29tan%286%29%29%2F%28tan%286%29%2Btan%2813%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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