If vec(A) + vec(B) = vec(C ), then magnitude of vec(B) is

1.	If vec(A) + vec(B) = vec(C ), then magnitude of vec(B) is
Answer» `VEC(C )- vec(A)` `C-A` `SQRT(vec(C ).vec(B) - vec(A).vec(B))` `sqrt(vec(C ).vec(A) - vec(B).vec(A))` ANSWER :C

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