- #1
mr_coffee
- 1,629
- 1
Hello everyone, this should be a simple problem..its for matrices and I already delt with this in calc III and physics but it says:
find a unit vector with positive first coordinate orthogonal to both a and b.
a = <1,2,1>
b = < 1,8,1>
so i took the cross product and got:
<-6,0,6> it says, my j component is right but the i and k are wrong. Any ideas why?
find a unit vector with positive first coordinate orthogonal to both a and b.
a = <1,2,1>
b = < 1,8,1>
so i took the cross product and got:
<-6,0,6> it says, my j component is right but the i and k are wrong. Any ideas why?