If the straight line
\[
x+by+1=0
\]
is a polar with respect to the circle
\[
x^2+y^2-8x+10y-8=0,
\]
but not a tangent and not a chord, then all the values of \(b\) lie in the interval
Show Hint
For a line
\[
ax+by+c=0,
\]
compare its perpendicular distance from the centre with the radius:
\[
\boxed{
\begin{aligned}
d
d=r &\Rightarrow \text{Tangent}
d>r &\Rightarrow \text{Outside the circle}
\end{aligned}
}
\]