Consider the following helix with vector equation r (t) = 2 cos (t) i + 2 sin (t) j + t k

3. Consider the following helix with vector equation r (t) = 2 cos (t) i + 2 sin (t) j + t k (a) (5 points) Determine the arclength function of the helix. (b) (5 points) Reparametrization respect to arclength measured from (2, 0, 0) in the direction of increasing t