ધારો કે $L_1: \frac{x+2}{5}=\frac{y-3}{2}=\frac{z-6}{1}$ અને $L_2: \frac{x-3}{4}=\frac{y+2}{3}=\frac{z-3}{5}$ એ આપેલી રેખાઓ છે. તો $L_1$ અને $L_2$ બંનેને લંબ એકમ સદિશ કયો છે?

  • A
    $\frac{-\hat{i}-3 \hat{j}+\hat{k}}{\sqrt{11}}$
  • B
    $\frac{\hat{i}-3 \hat{j}+\hat{k}}{\sqrt{11}}$
  • C
    $\frac{\hat{i}+3 \hat{j}-\hat{k}}{\sqrt{11}}$
  • D
    $\frac{\hat{i}+3 \hat{j}+\hat{k}}{\sqrt{11}}$

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જો $\overrightarrow{a}=\hat{i}+\hat{j}+\hat{k}$,$\overrightarrow{b}=\hat{i}+\hat{j}$,$\overrightarrow{c}=\hat{i}$ અને $(\overrightarrow{a} \times \overrightarrow{b}) \times \overrightarrow{c}=\lambda \overrightarrow{a}+\mu \overrightarrow{b}$ હોય,તો $\lambda+\mu$ ની કિંમત શોધો.

જો $\bar{a} = \bar{i} - 2\bar{j} - 2\bar{k}$ અને $\bar{b} = 2\bar{i} + \bar{j} + 2\bar{k}$ બે સદિશો હોય,તો $(\bar{a} + 2\bar{b}) \times (3\bar{a} - \bar{b}) = $

$i + j$ અને $j + k$ બંનેને લંબ એકમ સદિશ કયો છે?

જો $\vec{u} = \vec{a} - \vec{b}$ અને $\vec{v} = \vec{a} + \vec{b}$ અને $|\vec{a}| = |\vec{b}| = 2$ હોય,તો $|\vec{u} \times \vec{v}| = ......$

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