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If line makes angles of 90,135,45 with c...

If line makes angles of 90,135,45 with coordinate axis respectively, then its direction cosines are
(1)`<1/(sqrt(2)),(1)/(2),0>`(2)`<0,-(1)/(sqrt(2)),(1)/(2)>` (3) `<0,-(1)/(sqrt(2)),(1)/(sqrt(2))>`(4)`<(1)/(2),(1)/(sqrt(2)),0>`

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