Nathan J.

asked • 06/24/22

Find Unit Tangent and Normal Vectors

Find →T→ and →N→ for the curve r(t)=⟨3cos(3t), 3sin(3t), 5t⟩ at the point t=0


Give your answers to two decimal places

1 Expert Answer

By:

Johnny M. answered • 06/24/22

Tutor
5 (10)

Calculus Teacher

See tutors like this
See tutors like this

See video for work/answers.

Upvote • 1 Downvote
More
Report

Nathan J.

Thank you for the video, it was super helpful. Although, the answer for the tangent vector doesn't seem to be right. I have reworked it a few times and have gotten the same results. For my homework software, it wants me to give my answer to 2 decimal places. I have distributed the 1/rad 34 and inputted the following. [0, 3/rad34, 5/rad34] and this was wrong. Any thoughts?
Report

06/26/22

Johnny M.

Hi Nathan, the answer would be right, but we just need to enter it in the format your software is requesting. If they want decimals rounded to two decimal places, then this would be: T = < 0, 0.51, 0.86 > N = < -1, 0, 0 > Give that a try and let me know if that works for you!
Report

06/26/22

Nathan J.

I also tried that and it's still coming up as incorrect. I do not understand where I might be going wrong.
Report

06/26/22

Johnny M.

Could you try T = < 0, 0.87, 0.49 > and leave N = < -1, 0, 0 >. Let me know if this still doesn't work for you.
Report

06/26/22

Nathan J.

That did the trick. Thank you for the help. Seems like the computer software was being extra picky.
Report

06/27/22

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.