A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 4 years ago

if v1=(2,5) and v2=(4,-3) then the angle between the two vectors is_____. round the answer to two deciaml places

  • This Question is Closed
  1. Hero
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1328233416114:dw|

  2. Hero
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1328233602643:dw|

  3. amistre64
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[cos(t)=\frac{v1.v2}{|v1||v2|}\]

  4. amistre64
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    even tho the tangent thing would work as well :)

  5. Hero
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    105.07

  6. amistre64
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    cos(t) = -7/5sqrt(29) t = arccos(-7/5sqrt(29))

  7. amistre64
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    105 degrees or so is good

  8. Hero
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yeah, I'll just stick with tangent. I suppose your way is faster, but I don't know.....

  9. amistre64
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    its easier when the angles arent split on the x axis :)

  10. amistre64
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    otherwise that tangent is just as suitable

  11. Hero
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I suppose.

  12. Hero
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I doubt it though. I'd still figure out a way to use tangent discreetly

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

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.