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The angle between the pair of straight l...

The angle between the pair of straight lines whose direction cosines are given by the equations `2l-m+2n=0` and `mn+nl+lm=0` is -

A

`(pi)/(2)`

B

`(pi)/(4)`

C

`(pi)/(3)`

D

`(pi)/(6)`

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The correct Answer is:
A
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CHHAYA PUBLICATION-MCQ ZONE -Question Paper 2
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