Consider the spiral given parametrically by
x(t) = 9e-0.5t sin (2t)
y(t) = 9e-0.5t cos (2t)
on the interval 0 ≤ t ≤ 8.
![2433_Spiral.png](https://secure.tutorsglobe.com/CMSImages/2433_Spiral.png)
Fill in the expression which would complete the integral determining the arc length of this spiral on 0 ≤ t ≤ 8.
Determine the arc length of the given spiral on 0 ≤ t ≤ 8.
Now determine the arc length of the given spiral on [0, ∞).