Find the curve's unit tangent vector. Also, find the length of the indicated portion of the curve. r(t) = (4 cos t)j+ (4 sin 3t) k, Osts Find the curve's unit tangent vector. T(t) = k +

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A: This question is based on finding volume of solid.

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Q: Find the curve's unit tangent vector. Also, find the length of the indicated portion of the curve.…

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A: We will use first shifting Theorem to solve this question.

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Q: In what instance does the Chain Rule of differentiation applicable? Explain briefly.

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Q: つX

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A: We have to use trapezoidal rule. Option B is correct.

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A: See the solution in below

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