1.

If the angles made by the normal of the plane 2x + 3y - 4z - 16=0 with the coordinates axes X, Y, Z are Cos ^(-1) k _(1), Cos ^(-1) k _(2), Cos^(-1) k _(3),then k _(1), k _(2), k _(3) respectively are

Answer»

`(2) /(sqrt29) , (3)/(sqrt29) , (4)/(sqrt29)`
`(2)/(sqrt29), - (3)/(sqrt29) , (4)/(sqrt29)`
`(2)/(sqrt29) , (3)/(sqrt29), - (4)/(sqrt29)`
`1/2, 1/3, -1/4`

ANSWER :C


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