The angle between the lines $\bar{r}=(\hat{i}+2 \hat{j}+3 \hat{k})+\lambda(2 \hat{i}-2 \hat{i}+\hat{k})$. and $\bar{r}=(\hat{i}+2 \hat{j}+3 \hat{k})+\lambda(\hat{i}+2 \hat{j}+2\hat{k})$

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Aicharya · Accepted Answer

$	heta=\cos ^{-1}\left(\frac{2 	imes 1-2 	imes 2+1 	imes 2}{\sqrt{2^2+2^2+1^2} \sqrt{1^2+2^2+2^2}}ight)=\cos ^{-1}(0)=90^{\circ}$

The angle between the lines $\bar{r}=(\hat{i}+2 \hat{j}+3 \hat{k})+\lambda(2 \hat{i}-2 \hat{i}+\hat{k})$.…

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