An angle between the lines whose directi...

An angle between the lines whose direction cosines are given by the equations, `1+ 3m + 5n =0 and 5 lm - 2m n + 6 nl =0,` is :

A

`cos ^(-1)((1)/(8))`

B

`cos ^(-1) ((1)/(3))`

C

`cos ^(-1) ((1)/(4))`

D

`cos ^(-1) ((1)/(6))`

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The correct Answer is:

D

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