If the magnitude of sum of two vectors is equal to the magnitude of difference of the two vectors, the angle between these vectors is:

Question

If the magnitude of sum of two vectors is equal to the magnitude of difference of the two vectors, the angle between these vectors is:, 0 o, 90 °, 45 °, 180 °

MARKS App · Accepted Answer

A → + B → = A → - B → A → 2 + B → 2 + 2 A → B → cos θ = A → 2 + B → 2 - 2 A → B → cos θ 4 A → B → cos θ =0 cos θ = 0 θ = 90 °

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