This link may help you
Differential geometry of surfaces - Wikipedia, the free encyclopedia
Let be the arclength parameterisation of a plane curve .
Given such that , let be a parameterisation of a space curve .I'm not really sure how to show this. Firstly, in my book it has which I can't see how i'm supposed to apply.a). Show that is the arclength parameterisation of C.
Does anyone have any pointers?
This link may help you
Differential geometry of surfaces - Wikipedia, the free encyclopedia