Question 703162
Let me draw plane P, and cars A, and B.
{{{drawing(300,300,-1000,7000,-1000,7000,
line(-1000,0,7000,0),blue(line(-1000,5800,7000,5800)),
green(line(0,5800,4531.5,0)),green(line(0,5800,6006.1,0)),
line(0,0,0,5800), rectangle(0,0,300,300),
locate(-150,-50,F),locate(4400,-50,A),locate(5860,-50,B),
locate(-150,6300,P),circle(6500,5800,100),locate(6350,6300,H),
locate(2500,6300,horizontal),locate(1000,400,horizontal),locate(1100,-30,highway)
)}}}
angle HPB = {{{44^o}}} --> angle FPB = {{{90^o-44^o=46^o}}}
FB = {{{5800ft*tan(46^o)=6006.1ft}}} (rounding)
angle HPA = {{{52^o}}} --> angle FPB = {{{90^o-52^o=38^o}}}
FA = {{{5800ft*tan(38^o)=4531.5ft}}} (rounding)
AB = FB - FA = {{{6006.1ft -4531.5ft=1474.6ft}}}
The cars are about {{{1475ft}}} apart.