If ` vec a\ ` is a non zero vecrtor iof modulus `a` and `m` is a non zero scalar such that `m a` is a unit vector, write the value of `mdot`

Explanation

Given `vec{a}` a non zero vector with modulus a.

Also,
`m vec{a}` is the unit vector.

Therefore,


`|m vec{a}|=1 `

`Rightarrow|m||vec{a}|=1 `

`Rightarrow|m| a=1 `

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