Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

ballerinaxbb

  • one year ago

Express the complex number in trigonometric form. -3i

  • This Question is Closed
  1. ballerinaxbb
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @zepdrix Hey can you help?

  2. ballerinaxbb
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I think the answer is 3(cos 90° + i sin 90°) but I just need confirmation from someone cause I'm not 100% sure. :)

  3. zepdrix
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Hmm so we're moving along the Imaginary axis, in the negative direction, 3 units. So I think we're moving straight DOWN 3 units. So our angle would need to be \(-90^o\) or \(270^o\) :o

  4. ballerinaxbb
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    3(cos 180° + i sin 180°) 3(cos 270° + i sin 270°) 3(cos 90° + i sin 90°) 3(cos 0° + i sin 0°)

  5. ballerinaxbb
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Those are my answer choices

  6. zepdrix
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Hmm, one of them has a 270 c; Hmmmmm

  7. ballerinaxbb
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Lol so it's that one? 3(cos 270 + i sin 270) ?

  8. zepdrix
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yah I think so c:

  9. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.