document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1150839>Question 1150839</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Apply the law of sines or the law of cosines and diagram and label the appropriate parts of the triangles. \r<BR>\n" );
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document.write( "An airplane sights an airport runway at an angle of depression at 47 degrees. After the plane flies 4 miles closer the angle of depression from the plane to the runway is 62 degrees. What is the air distance from the plane to the end of the runway at the second sighting?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #772350 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=772350\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing+%28+600%2C+600%2C+-10%2C+15%2C+-10%2C+10%2C%0D%0A%0D%0Acircle%280%2C5%2C.12%29%2Clocate%280.5%2C5.5%2CA%29%2Ccircle%2810%2C0.12%29%2Clocate%2810%2C-0.5%2CB%29%2Cblue%28line%280%2C5%2C10%2C0%29%29%2Cblue%28line%280%2C5%2C15%2C5%29%29%2Clocate%281.5%2C4.7%2C47%29%2Clocate%288.5%2C0.5%2C47%29%2Ccircle%284%2C0%2C.12%29%2Clocate%284%2C-0.5%2CC%29%2Clocate%282%2C-0.5%2C4mil%29%2Cblue%28line%284%2C0%2C4%2C5%29%29%2Cblue%28line%2810%2C0%2C4%2C5%29%29%2Clocate%285%2C4.5%2C62%29%2Clocate%287%2C1.5%2C62%29%2Clocate%287%2C-0.5%2Cx%29%2Clocate%283.5%2C2.5%2Ch%29%2Clocate%280.5%2C2.5%2Ch%29%2Clocate%284%2C5.5%2CD%29%2C%0D%0Agraph%28+600%2C+600%2C+-10%2C+15%2C+-10%2C+10%2C+0%29%29+ ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "from triangle AOB we have:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%2847%29=h%2F4 ALIGN=MIDDLE  ALT=\"tan%2847%29=h%2F4\"   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=h=4tan%2847%29 ALIGN=MIDDLE  ALT=\"h=4tan%2847%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.....eq.1\r<BR>\n" );
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document.write( "from triangle CDB we have:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%2862%29=h%2Fx ALIGN=MIDDLE  ALT=\"tan%2862%29=h%2Fx\"   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=h=x%2Atan%2862%29 ALIGN=MIDDLE  ALT=\"h=x%2Atan%2862%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.....eq.2\r<BR>\n" );
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document.write( "from eq.1 and eq.2 we have\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4tan%2847%29=x%2Atan%2862%29 ALIGN=MIDDLE  ALT=\"4tan%2847%29=x%2Atan%2862%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=x=4tan%2847%29%2Ftan%2862%29 ALIGN=MIDDLE  ALT=\"x=4tan%2847%29%2Ftan%2862%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=x=4%281.07236871%29%2F1.880726465346332 ALIGN=MIDDLE  ALT=\"x=4%281.07236871%29%2F1.880726465346332\"   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=x=2.28mil ALIGN=MIDDLE  ALT=\"x=2.28mil\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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