The angle between the vectors \( \vec{A} \) and \( \vec{B} \) is \(...

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The angle between the vectors \( \vec{A} \) and \( \vec{B} \) is \( \theta \). The
\( \mathrm{P} \)
value of the triple product \( \vec{A} \cdot(\vec{B} \times \vec{A}) \) is
W
(1) \( A^{2} B \)
(2) Zero
(3) \( A^{2} B \sin \theta \)
(4) \( A^{2} B \cos \theta \)
4
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