# The vector in the direction of the vector that has magnitude 9 isA. B. C. D. Given is the vector .

Let this vector be , such that Let us first find the unit vector in the direction of this vector .

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.

Unit vector in the direction of the vector is given as, As, we have .

Then,  [ if  ]   Therefore, [ and ]

We have found unit vector in the direction of the vector , but we need to find the unit vector in the direction of but also with the magnitude 9.

We have the formula:

Vector in the direction of with a magnitude of 9  And as just found.

So,

Vector in the direction of with a magnitude of 9=  Thus, vector in the direction of vector and has magnitude 9 is .

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