Question 1141424
{{{drawing( 600, 600, -10, 10, -15, 10,

circle(5,0,.12),circle(5,-12,.12),arrow(5,0,5,-12), green(arrow(0,0,5,-12)),
arrow(0,0,5,0),locate(2,1,5mil-W),locate(6,-5,12mil-S),
 graph( 600, 600, -10, 10, -15, 10,0)) }}} 


use Pythagoras theorem to find the distance from origin to point ({{{5}}},{{{-12}}})

in right triangle, the lengths of legs are {{{5}}} and {{{12}}} units, so hypotenuse {{{d}}} (the distance from origin to point) will be:

{{{d=sqrt(5^2+12^2)}}}

{{{d=sqrt(25+144)}}}

{{{d=sqrt(169)}}}

{{{d=13}}}

=>  you are {{{13}}} miles from your starting point