Cocaider the vector-waland function definod by

vec(r)(t)-(4cost,4sint,3t)

for

0

(20 Paints To(al)\ (a) Fisd an arc length partucterization for

M(t)

. You must answer in simpliffed form. Decimals not allowed! (10 Point\ (b) Determine the unit tangent vector for

vec(F)(t)

. You must nnswer in simplified form. Decimals not allowed! (10 Points)

2. Cocsider the vectar-valund function defined by r(t){4coct,4sint,3t) for 0t2 (20 Paints Total) (a) Fisd an arclength parmeterization for M(t). You must answer in simpliffed form. Decimals not allowed! (10 Points) (b) Determine the unit tangent vector for F(t). You must nnswer in simplified form. Decimals not allowredl (11 Points)