Find the unit tangent vector the unit normal vector and the

Question

1. Find the unit tangent vector, the unit normal vector and the curvature of the helix x = a cos θ, y = a sin θ, z = bθ at the point with parameter θ.

2. Find the unit tangent vector, the unit normal vector and the curvature of the parabola x = ap², y = 2ap, z = 0 at the point with parameter p.