- #1
Equilibrium
- 82
- 0
Homework Statement
Find the vector product [tex]\vec{A} \times \vec{B}[/tex] (expressed in unit vectors ) of the two vectors given. What is the magnitude of the vector product?
[tex]\vec{A} = 5.00\hat{i} + 2.00\hat{j}[/tex]
[tex]\vec{B} = 3.00\hat{i} - 1.00\hat{j}[/tex]
Homework Equations
[tex]\vec{A}\vec{B}\sin(\theta)[/tex]
The Attempt at a Solution
using pythagorean theorem i found that the resultant of the two is
5.39 and 3.16
plus the total angle w/c is 40.2
using the formula mentioned above i found the answer as 11k and magnitude of 11.0
what i am confused is that it has a different answer from the back of my book w/c is -[tex]-17\hat{k},17.0[/tex]
who is wrong the book or me?
and pls show me why?
Last edited: