A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

find the angle between the vectors a = I^ + 2j^ - k^ and b = -I^ + j^ -2k^

  • This Question is Open
  1. IrishBoy123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    nothing obvious about it so use the dot product: \(\vec a \bullet \vec b = |\vec a||\vec b| cos \theta\)

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

    can u pls solve it

  3. IrishBoy123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    can't. site has rules about stuff like that. but i can tell you that, if \(\large \vec a = a_x \hat i + a_y \hat j + a_z \hat k\) and \(\large \vec b = b_x \hat i + b_y \hat j + b_z \hat k\), then \(\large \vec a \bullet \vec b = a_xb_x + a_yb_y + a_zb_z\)

  4. 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.