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\text { If } \vec{v} \times \vec{w}=4 \vec{i}+\vec{j}+\vec{k}, \text { and } \vec{v} \cdot \vec{w}=5, \text { and } \theta \text { is the angle between } \vec{v} \text {

and } \vec{w}, \text { then } (a) tan e (b) е

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