We have,

Since, unit vector is needed to be found in the direction of the sum of vectors and .

So, add vectors and .

Let,

Substituting the values of vectors and .

We know that, a unit vector in a normed vector space is a vector (often a spatial vector) of length 1.

To find a unit vector with the same direction as a given vector, we divide by the magnitude of the vector.

For finding unit vector, we have the formula:

Substitute the value of .

Here, .

Thus, unit vector in the direction of sum of vectors and is .