In the figure to the​ right, it looks as if v1+v2 and v1−v2 are orthogonal. Under what circumstances would we expect the sum of two vectors to be orthogonal to their​ difference? Choose the correct answer below. They will be orthogonal if v1 and v2 do not have the same direction. They will be orthogonal if v1 and v2 are orthogonal. They will be orthogonal if v1 and v2 have the same magnitude. They will be orthogonal if either v1 or v2 is a unit vector.

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