If A → and B → are two vectors satisfying the relation A → · B → = | A → × B → | . Then the value of | A → - B → | will be:

Question

If A → and B → are two vectors satisfying the relation A → · B → = | A → × B → | . Then the value of | A → - B → | will be:, A 2 + B 2, A 2 + B 2 + 2 A B, A 2 + B 2 + 2 A B, A 2 + B 2 - 2 A B

MARKS App · Accepted Answer

A → · B → = | A → × B → | A B cosθ = A B sinθ ⇒ θ = 45 ° | A → - B → | = A 2 + B 2 - 2 A B cos 45 ° = A 2 + B 2 - 2 A B Hence option ( 4 ) .

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