If a vector \( \vec{P} \) making angles \( \alpha, \beta \) and \( \gamma \) respectively with \....

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Question If a vector \( \vec{P} \) making angles \( \alpha, \beta \) and \( \gamma \) respectively with \( X, Y \) and \( Z \) axes respectively.
Then \( \sin ^{2} \alpha+\sin ^{2} \beta+\sin ^{2} \gamma= \)
(A) \( 0 \)
(B) \( 1 \)
(C) \( 2 \)
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