(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Find a unit vector in the direction of the given vector.

v=5i-2j

2. Relevant equations

[[v]]=square root of (V1^2 +V2^2)

v/[[v]]

3. The attempt at a solution

I went 100% simplification.. answer I got was <(5squareroot of 29)/29, (-2squareroot of 29)/29>

But the back of the book says its.. (1/(square root of 29))<5, -2>...

Is there any reason that the book didn't simplify further?

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On another problem, in one not given in "standard unit vectors" (i and j)..

u=<0, -6>..

I went straight to simplifying it to <0, -1>..and book also has that.. then why didn't the book write it as (1/6)<0,-6> like the 1st problem?

Thanks

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# Correct form of Unit Vectors

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