MCQ
$\vec{a} \vec{b} \vec{c}$ एकतलीय होंगे, यदि :
- A$(\vec{a} \cdot \vec{b}) \vec{c}=0$
- ✓$\vec{a}(\vec{b} \times \vec{c})=0$
- C$\vec{a} \times(\vec{b} \times \vec{c})=0$
- D$\vec{a} \cdot(\vec{b}+\vec{c})=0$
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