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If the d.c.'s (l, m, n) of two lines are...

If the d.c.'s (l, m, n) of two lines are connected by the relations `l+m+n=0 " and " 2mn+3ln-5lm=0` then the angle between the lines is

A

`pi//4`

B

`pi//3`

C

`pi//6`

D

`pi//2`

Text Solution

Verified by Experts

The correct Answer is:
D
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