Answer
$(x,y) = (-0.73, -0.69)$
Work Step by Step
The radius of the circle is 1. We can find the angle $\theta$:
$\theta = s~r$
$\theta = (-3.9)(1)$
$\theta = -3.9~radians$
We can find $x$:
$\frac{x}{r} = cos~\theta$
$\frac{x}{1} = cos~\theta$
$x = cos~(-3.9~rad)$
$x = -0.73$
We can find $y$:
$\frac{y}{r} = sin~\theta$
$\frac{y}{1} = sin~\theta$
$y = sin~(-3.9~rad)$
$y = -0.69$
$(x,y) = (-0.73, -0.69)$