Given $\bar{a}=2 \bar{i}+\bar{j}-2 \bar{k}$ and $\bar{b}=\bar{i}+\bar{j}$. If $\bar{c}$ is a vector such…

Given $\bar{a}=2 \bar{i}+\bar{j}-2 \bar{k}$ and $\bar{b}=\bar{i}+\bar{j}$. If $\bar{c}$ is a vector such that $\bar{a} \cdot \bar{c}=|\bar{c}|,|\bar{c}-\bar{a}|=2 \sqrt{2}$ and the angle between $\bar{a} \times \bar{b}$ and $\bar{c}$ is $30^{\circ}$, then the value of $|(\bar{a} \times \bar{b}) \times \bar{c}|^2$ is
  1. 9
  2. $\frac{4}{9}$
  3. $\frac{9}{4}$
  4. $\frac{27}{4}$

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2017 (24 Apr Shift 1)

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