(This question may have multiple correct answers)
`[ -1/(sqrt 35) ,5/(sqrt 35), 3/(sqrt 35 ) ]`
`[ -1/(sqrt 35) , -5/(sqrt 35), 3/(sqrt 35 ) ]`
`[ 1/(sqrt 35) ,5/(sqrt 35), - 3/(sqrt 35 ) ]`
None of these
`cos^(-1) (1/sqrt 2 )`
`cos^(-1) (1/sqrt 3)`
`cos^(-1) (1/3)`
`cos^(-1) (1/2)`
`< 1/sqrt(3) , 1/sqrt(3) , 1/sqrt(3) >`
`< 0, 1, 0 >`
`< 1, 0, 0, >`
`< 1, 1, 1 >`
`< 2,-1,2 >`
`< -2,1,2 >`
`< 2, 1, - 2 >`
`< - 2,- 1,- 2 >`
`mm' + pp' =1`
`m/m' + p/p' =-1`
`m/m' + p/p' =1`
`mm' + pp' =-1`
`(1, 1, 1)`
`(3, 3, 3)`
`(9, 0, 0)`
`(2, 6, 1)`
`(x-1)/2 = ( y-2)/(-3) = (z-3)/8`
`(x-1)/1 = (y-2)/2 = (z-3)/3`
`(x-4)/1 = (y+1)/2 = (z+10)/3`
None of these
`sin^(-1) (1/3)`
`cos^(-1) (1/3)`
variable
None of these
`pi`
`pi/2`
`pi/3`
`pi/4`
`(0, 6, -1)` and `(1, -2, -1)`
`(0, 6, -1) ` and `(-1, -4, -2)`
`(1, -2, -1) ` and `(1, 4, -2)`
`(1, -2, -1) ` and `(0, -6, 1)`
`2x - 3y + 6z - 25 = 0`
`2x-3y + 6z + 25 = 0`
`3x - 2y + 6z- 25= 0`
`3x - 2y + 6z + 25 = 0`
`2x + y - 2z = 0`
`3x + 4y + 5z = 7`
`x+ y+ z =2`
`2x + 3y + 4z = 0`
`2, 3, 4`
`4, 0, 7`
`-2, 0,-1`
`2,0, -1`
`k = 3` or `- 3`
`k = 0` or `- 1`
`k = 1` or `-1`
`k = 0` or `-3`
`(10, - 10, 3)`
`(10, 10, - 3)`
`(-10, 10, 3)`
None of these
`2`
`3`
`4`
`5`
`(-3,- 4,- 5)`
`(3, 4, 5)`
`(3, 4, - 5)`
`(-3, 4,- 5)`