Let the direction cosines..... | JEE Main 2026 | Vector & 3D

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Let the direction cosines of two lines satisfy the equations: $4 l+m-n=0$ and $2 m n+10 n l+3 l m=0$. Then the cosine of the acute angle between these lines is i

Select the correct option:

A

$\frac{10}{\sqrt{38}}$

B

$\frac{20}{3 \sqrt{38}}$

C

$\frac{10}{7 \sqrt{38}}$

D

$\frac{10}{3 \sqrt{38}}$

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