How to find a vector that is perpendicular to another? I know their dot product = 0, but is there was a way of finding a perpendicular vector right away?

Question

anonymous · Answer

to check for perpendicular dot product is the best one

anonymous · Answer

yes, but say for example i have <2/3, 1/2, 2/3> how do i find a perpendicular vector? I mean, I'm guessing numbers atm which I know is wrong. Is there a better way?

anonymous · Answer

can u state ur complete question please

anonymous · Answer

Ok. What is a vector that is perpendicular to the following unit vector <2/3, 1/2, 2/3>?

anonymous · Answer

you can make the dot product equal zero in this case you have x=2/3 and z=2/3
set one to 1 and the other to -1 and y=0
<-1,0,1> will give you a perpendicular vector

I don't know if there is a better way