document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1013227>Question 1013227</A>: <I><SPAN STYLE=\"word-break: break-all;\"> . An airplane is flying 10,500 ft. above the ground. The angle of depression from the plane to the base of a tree<BR>\n" );
document.write( "is 13o<BR>\n" );
document.write( "50’. How far horizontally must the plane fly to be directly over the tree?\r<BR>\n" );
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document.write( "I've been trying to answer this question but I really don't understand it. I'm also not ale to attend the discussion. Can you help me? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #629529 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=629529\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Okay, sure...<BR>\n" );
document.write( "Make yourself a diagram...the angle of depression from the plane is equal to the angle of elevation from the base of the tree...call it x...<BR>\n" );
document.write( "We need to find the distance to the tree along the ground from under where the plane is...<BR>\n" );
document.write( "We can use the tangent...50' of arc is .833 degrees<BR>\n" );
document.write( "tan 13.833 degrees = 10500 / x<BR>\n" );
document.write( "or<BR>\n" );
document.write( "x = 10500 / tan 13.8333 = 42641 feet<BR>\n" );
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