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If a line makes angles 90^@, 135^@ and 4...

If a line makes angles `90^@`, `135^@` and `45^@` with positive direction of X, Y and Z axis respectively, then its direction-cosines are

A

`lt1,-1/sqrt 2,1gt`

B

`lt0,-1/sqrt 2,-1gt`

C

`lt1,-1/sqrt 2,-1gt`

D

`lt0,-1/sqrt 2,1/sqrt 2gt`

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