Curvature and angle with k direction

[plexus0208]

Homework Statement

How do I show that the curve makes a constant angle with the vertical (k) direction?

Homework Equations

The Attempt at a Solution

I know the curvature. What else do I need to know?

 

[lanedance]

Homework Statement

How do I show that the curve makes a constant angle with the vertical (k) direction?

Homework Equations

The Attempt at a Solution

I know the curvature. What else do I need to know?

your question is not very clear

however for

How do I show that the curve makes a constant angle with the vertical (k) direction?

have a think about what you could dot product with the k unit vector to show this...