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the acute angle between two lines such t...

the acute angle between two lines such that the direction cosines l, m, n of each of them satisfy the equations `l + m + n = 0` and `l^2 + m^2 - n^2 = 0` is

A

`15^(@)`

B

`30^(@)`

C

`60^(@)`

D

`45^(@)`

Text Solution

Verified by Experts

The correct Answer is:
C
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