The angle between the straight lines, whose direction cosines are given by the equations \(2ℓ+2\mathrm{m}-\mathrm{n}=0\) and \(\mathrm{mn}+\mathrm{nl}+\mathrm{Im}=0\), is:

[JEE Main 2021, 27 Aug (Shift 2)]

Question

The angle between the straight lines, whose direction cosines are given by the equations \(2ℓ+2\mathrm{m}-\mathrm{n}=0\) and \(\mathrm{mn}+\mathrm{nl}+\mathrm{Im}=0\), is:

[JEE Main 2021, 27 Aug (Shift 2)]

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