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Question

The angle between the vectors A and B is θ. Find the value of the triple product A.(B × A).


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

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Solution

The correct option is D

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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