If direction cosines of two lines are proportional to (2, 3, ?6) and (3, ?4, 5), then the acute angle between them is [MP PET 2003]

\[{{\cos }^{-1}}\left( \frac{49}{36} \right)\]

\[{{\cos }^{-1}}\left( \frac{18\sqrt{2}}{35} \right)\]

\[{{\cos }^{-1}}\left( \frac{18}{35} \right)\]

If direction cosines of two lines are proportional to (2, 3, ?6) and (

1.	If direction cosines of two lines are proportional to (2, 3, ?6) and (3, ?4, 5), then the acute angle between them is [MP PET 2003]
A.	\[{{\cos }^{-1}}\left( \frac{49}{36} \right)\]
B.	\[{{\cos }^{-1}}\left( \frac{18\sqrt{2}}{35} \right)\]
C.	\[96{}^\circ \]
D.	\[{{\cos }^{-1}}\left( \frac{18}{35} \right)\]
Answer» C. \[96{}^\circ \]

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If direction cosines of two lines are proportional to (2, 3, ?6) and (3, ?4, 5), then the acute angle between them is [MP PET 2003]

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