2icap-jcap+xkcap is a unit vector than find the value of x?
well, you know that you need
2^2+1^2+x^2 = 1
good luck with that, since x^2 is always positive.
I suspect there is more to this problem than you posted.
2^2+1^2+x^2 = 1
good luck with that, since x^2 is always positive.
I suspect there is more to this problem than you posted.