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If the angle between two vectors $\vec{A}$ and $\vec{B}$ is $θ$ then the value of the product ( $\vec{B} \times \vec{A}$ ) . A is equal to

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zero

BA2sin⁡θ

BAcos⁡θ

B2Asin⁡θcos⁡θ

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detailed solution

Correct option is A

See figure(B→×A→)⋅A→=C→⋅A→=CAcos⁡90∘=0

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If the angle between two vectors A→ and B→ is θ then the value of the product (B→×A→) . A is equal to

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If the angle between two vectors $\vec{A}$ and $\vec{B}$ is $θ$ then the value of the product ( $\vec{B} \times \vec{A}$ ) . A is equal to