- Thread starter
- #1

- Jan 29, 2012

- 661

Here is a link to the question:r (t) = tcos(t) i + tsin(t) j + sqrt(4 − t^2) k, 0<t<2 (should be less then equal to signs in the constraint)

Show, by calculation, that the tangent vector to this curve is always perpendicular

to r (t).

I have struggled to much with this question, not really sure where to start?

Please help, How to show if a tangent vector is perpendicular to r(t)? - Yahoo! Answers

I have posted a link there to this topic so the OP can find my response.