The resultant of \( \vec{A} \) and \( \vec{B} \) makes an angle \( ...

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The resultant of \( \vec{A} \) and \( \vec{B} \) makes an angle \( \alpha \) with \( \vec{A} \) and \( \beta \) with \( \vec{B} \), then:
(1) \( \alpha\beta \)
(2) \( \alpha\beta \) if \( AB \)
W.
(3) \( \alpha\beta \) if \( AB \)
(4) \( \alpha\beta \) if \( A=B \)
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