Problem 3. (1 point) Let the position vecor be R.(t) =

Problem 3, (1 point) Let the position vecor be R(t) normal vector N(t) O (3, O Sin(3t) , 6 cos(3t)) 45 45 (sin(3tj)) cos(3t)) 'Rots 2 qos(3t) 2 sin(3t)) (3t,1 2 cos(3t? 2 Compute the prinCipal unit p resile wan