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The direction cosines of two lines satis...

The direction cosines of two lines satisfying the
conditions `l + m + n = 0 and 3lm - 5mn + 2nl = 0`
where l, m, n are the direction cosines.
The value of `lm+mn + nl` is

A

0

B

`-1`

C

`-1/2`

D

1

Text Solution

Verified by Experts

The correct Answer is:
C
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