1. The problem statement, all variables and given/known data Problem statement uploaded as image. 2. Relevant equations Arc-length function 3. The attempt at a solution Tangent vector: r=-sinh(t), cosh(t), 3 Now, I just need to reparameterize it using arclength and verify my work is unit-speed. Will someone give me a hint? Should I use the arc-length function to accomplish this.