Find a vector that has the same direction as −2, 4, 6 but has length 6.

We are givem vector < −2, 4, 6 >

First we would find norm of given vector.

In order words norm is the length of given vector.

Length of given vector ||v|| = || −2, 4, 6 || =

||v|| =

Now, we need to find a vector in the same direction as given vector but length is 6.

So, dividing 6 by the length of given vector.

We get

Multiplying this value by given vector, we get

the answer is to check all of them! they all apply well at least i think so!

no. dot product   =0 when vecs at right angles