A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
 2 years ago
find a vector c knowing that that c is perpendicular to the vectors a=i2j+3k , b= 2i3j+k and c.(i+2j7k)=100.
 2 years ago
find a vector c knowing that that c is perpendicular to the vectors a=i2j+3k , b= 2i3j+k and c.(i+2j7k)=100.

This Question is Closed

TuringTest
 2 years ago
Best ResponseYou've already chosen the best response.2let \[\vec c=x\hat i+y\hat j+z\hat k\]from last time hopefully you remember that the dot product of two perpendicular vectors is zero, so we have that\[\vec a\cdot\vec c=0\]\[\vec b\cdot\vec c=0\]and\[\vec c\cdot(\hat i+2\hat j7\hat k)=100\]3 equations with 3 unknowns you will get a system that can be solved for x, y, and z

nickymarden
 2 years ago
Best ResponseYou've already chosen the best response.1yup, did it like that :P I'm only checking if i did it right :)

TuringTest
 2 years ago
Best ResponseYou've already chosen the best response.2well it looks like you did then :)
Ask your own question
Ask a QuestionFind 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
 Engagement 19 Mad Hatter
 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.