Hi,

find vectors T, N, and B at the given point

r(t)= <cost, sint, lncost>, (1,0,0)

I found T(t) = <-sint/tant, cost,tant, -1>

Is this correct?

Finding N would be messy 'quotient rule' or could I multiply T(t) by tant to remove it from the denominator?

I don't know what to do with the point (1,0,0)

Thanks.