Find the curve's unit tangent vector. Also, find the length of the indicated portion of the curve. A r(t) = (cos³t)j + (sin ³t)k, 0≤t≤- Find the curve's unit tangent vector. T(t) = t) =j+k Find the curve's unit tangent vector. Also, find the length of the indicated portion of the curve. r(t) = 6t³i-2t³j+3t³k 1sts2 The curve's unit tangent vector is (i+ +Dj+k (Type an integer or a simplified fraction.) ...

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