document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=950200>Question 950200</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane passes over your head at an altitude of 5000 feet. Two seconds later you observe that it's angle of elevation is 42°. How far did the plane travel during those two seconds? How fast in miles per hour was a plane traveling? Is it a commercial airliner or military aircraft? How do you know? Round all word to the nearest whole number </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #580176 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=580176\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A plane passes over your head at an altitude of 5000 feet.<BR>\n" );
document.write( " Two seconds later you observe that it's angle of elevation is 42°.<BR>\n" );
document.write( " How far did the plane travel during those two seconds?<BR>\n" );
document.write( " How fast in miles per hour was a plane traveling?<BR>\n" );
document.write( " Is it a commercial airliner or military aircraft? How do you know? Round all word to the nearest whole number<BR>\n" );
document.write( ":<BR>\n" );
document.write( "A right triangle is formed by the vertical from your position to plane when it was overhead. The the path of plane in 2 second and an angle of 48 degrees<BR>\n" );
document.write( "(90-42=48). Use the tangent of 48 degrees, side opposite (s) is the path of the plane and side adjacent is 5000 ft<BR>\n" );
document.write( "tan(48) = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s%2F5000 ALIGN=MIDDLE  ALT=\"s%2F5000\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "s = 5000 * 1.11<BR>\n" );
document.write( "s = 5553 ft in 2 sec<BR>\n" );
document.write( "that's<BR>\n" );
document.write( "5553/2 = 2776.5 ft/sec<BR>\n" );
document.write( "Convert to mph<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%282776.2%2A3600%29%29%2F5280 ALIGN=MIDDLE  ALT=\"%28%282776.2%2A3600%29%29%2F5280\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 1893 mph obviously only a military plane goes that fast </SPAN>\n" );
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