Answer
Rectangular coordinates: $(-1 , 1)$
-----------
Work Step by Step
In polar coordinates, the first number represents the value for $r$, and the second number represents the value for $\theta$.
$(\sqrt 2, 2.36)$
Thus: $r = \sqrt 2$ and $\theta = 2.36$
Knowing that $x = rcos(\theta)$ and $y = rsin(\theta):$
$x = rcos(\theta) = (\sqrt 2)(cos(2.36)) = -1$
$y = rsin(\theta) = (\sqrt 2)(sin(2.36)) = 1$