Find a unit vector with the same direction as v
v= 5i+ sqrt11j

Question

Find a unit vector with the same direction as v 
v= 5i+ sqrt11j

tkhunny · Answer

Have you considered calculating the magnitude of the vector?

ikram002p · Answer

unit vector need direction , but its leangth is always 1
so unit vector from v denoted by u is given by

$\bar u =\dfrac{\bar v }{|v|}$ s.t $|v| $ is the length of v

anonymous · Answer

what do you mean by that?

tkhunny · Answer

You didn't answer my question.  This will explain your query.

ikram002p · Answer

ok i'll let @tkhunny to continue with u ^

anonymous · Answer

I was leaning that to ikram002p

tkhunny · Answer

Can you calculate the magnitude of the vector?  This is the important question.

anonymous · Answer

@tkhunny i have not considered finding the magnitude but the magnitude would be sqrt(5^2+sqrt(11)^2)= sqrt(36) = 6

tkhunny · Answer

That's it.  Divide your vector by that scalar and you will be done.

anonymous · Answer

so, 5/6,sqrt11/6  ?

tkhunny · Answer

This is exactly the formulation provided earlier by ikram002p.  Good work.

You can check.  Calculate the magnitude of your new vector, and make sure you get one (1).