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Question

The angle between the vectors A and B is θ. The triple product A.(B × A) is equal to.

A
A2 B sin2θ
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B
A2 B sinθ cosθ
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C
A2 B cos2θ
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D
0.0
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Solution

The correct option is D 0.0
Let A.(B×A)=A.C
Here C=B×A which is perpendicular to both vector A and B
A.C=0

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