Question

The length of a vector r bar =3i^+j^+2k^in the x-y plane is​

Answer 1

You should take only the X and Y elements, i.e., 3i^ and j^ .

So, the resultant (r) should be like what geometry says :

(3)^2 + (1)^2 = (r)^2

This is what I think.

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