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5. [-/0.18 Points] DETAILS SCALCET9 13.XP.3.007.MI. Consider the vector function given below. r(t) = (6t, 5 cos(t), 5 sin(t)) (a) Find the unit tangent and unit normal vectors T(t) and N(t). T(t) = N(t) = (b) Use the formula K(t) = IT'(t)I to find the curvature. [r'(t)I K (t) =6. [40.18 Points] DETAILS SCALCET913.KP.3.004. Find the length of the curve correct to four decimal places. [Use your calculator to approximate the integral.} r[t} = (5mm, mam, tanm), 0 e t e g Z Need Help