If the direction cosines of a line are 1...

If the direction cosines of a line are `1/c,1/c,1/c` then: (A)`c=0` (B)`c=pmsqrt(3)` (C)`0ltclt1` (D)`cgt2`

A

`cgt0`

B

`c=pmsqrt(3)`

C

`0ltclt1`

D

`cgt2`

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The correct Answer is:

B

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