vectors

Question: If a vector $2\hat i + 3\hat j + 8\hat k$is perpendicular to the vector $4\hat j - 4\hat i + \alpha \hat k$. Then the value of $\alpha $ is



1) –1
2) $\frac{1}{2}$
3) $ - \frac{1}{2}$
4) 1
Solution: Explanation: explanation
multiplication-of-vectors

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