Question

What is unit vector?​

Answer 1

Answer:

Just like in Physics, every measurable quantity has a measuring unit. Similarly, in vector geometry, every vector also has a measuring unit, which can be termed as a Unit Vector. In simpler words, a unit vector can be defined as:  Any vector with magnitude one can be described as a Unit Vector.

Answer 2

Answer:

A unit vector is a vector of unit magnitude and a particular direction.

They specify only direction.

These unit vectors are perpendicular to each other.