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

If the direction cosines of a line are `1/c,1/c,1/c` rthen

A

`0ltclt1`

B

`cgt2`

C

`c=ivsqrt2`

D

`c=ivsqrt3`

Text Solution

Verified by Experts

The correct Answer is:
D
Since, DC's of a line are `(1/c,1/c,1/c)`
`therefore" "(1/c)^2+(1/c)^2+(1/c)^2=1`
`rArr" "c^2=3rArrc=pmsqrt3`
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