$If($:$n_1,n_2,n_3$:$)is$ the unit normal vector towards the concave side for

vec$(r)(t)=($:$e^{t}cos(t),e^{t}sin(t),\sqrt[\phantom{2}]{2}{e}^t$:$)att=0$

Write $n_1,$ rounded $to$ two digits after the decimal sign.