Question 1003796
The {{{ 1.8 }}} km is some fraction of the
entire circumference which is:
{{{ 2*pi*4.5 }}} km
----------------
That fraction is:
{{{ 1.8 / ( 2*pi*4.5 ) = .2/pi }}}
----------------
The entire circle is {{{ 2*pi }}} radians
{{{ ( .2/pi )*2*pi = .4 }}}
-----------------
The skier has gone {{{ .4 }}} radians from ( 4.5,0 )
The x-coordinate is:
{{{ 4.5*cos( .4 ) = 4.5*.921 }}}
{{{ 4.5*.921 = 4.145 }}}
The y-coorinate is:
{{{ 4.5*sin( .4 ) = 4.5*.389 }}}
{{{ 4.5*.389 = 1.752 }}}
The skier rested at ( 4.145, 1.752 )
Hope I got it!
( I believe the skier ends up in the 1st quadrant
because {{{ pi/4 = .785 }}} is greater than {{{ .4 }}}
and that is a 90 degree angle from start )