Question

How do you find a unit vector from the point P=(1,1) Q=(5,4)?

Answer 1

The unit vector is =⟨35,45⟩

Explanation:

The vector −−→PQ=⟨(4−1),(5−1)⟩=⟨3,4⟩

The modulus of vector ∥∥∥−−→PQ∥=√a2+b2=√9+16=5

The unit vector is given by ˆPQ=−−→PQ∥∥∥−−→PQ∥∥∥=15⟨3,4⟩