Thread: vector question

1. vector question

Hi, I am having difficulty figuring out this question

Find all unit vectors parallel to the yz-plane that are perpendicular to the vector (3,-1,2)

Thanx in advance

2. Originally Posted by justin016
Hi, I am having difficulty figuring out this question

Find all unit vectors parallel to the yz-plane that are perpendicular to the vector (3,-1,2)

Thanx in advance
parallel to the yz-plane means the x-component is zero. thus, you seek a vector of the form (0,y,z)

now, we want the dot product (0,y,z)*(3,-1,2) = 0

can you solve for y and z?

3. thanx alot.