Question:
If $\vec{a}, \vec{b}$, and $\vec{c}$ are unit vectors such that $\vec{a}+2 \vec{b}+2 \vec{c}=\overrightarrow{0}$, then $|\vec{a} \times \vec{c}|$ is equal to :
Correct Option: , 4
Solution:
Solve this following
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