document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=24819>Question 24819</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I REALLY NEED THE ANSWER IN DETAIL TO THIS PROBLEM..ITS DUE TOMORROW and its very important. THANK YOU <BR>\n" );
document.write( "* A window in a bulinging is 18m above the ground. From this window, the angle of elevation to the top of the building across the street is 40° and the angle of depression to the bottom of the building acress the street is 42°. How tall is the building across the street? Include a labelled diagram with you solution. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #13242 by </B><A HREF=/tutors/aboutme.mpl?userid=Paul><B>Paul(988)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Paul><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=13242\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the SINE law in here.<BR>\n" );
document.write( "theta/sin40 = 18/sin42 ---> cross ultiply<BR>\n" );
document.write( "theta = 18sin40/sin42<BR>\n" );
document.write( "theta = 17.29\r<BR>\n" );
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document.write( "Hence the building is 17.29m tall.<BR>\n" );
document.write( "Paul.  </SPAN>\n" );
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