can `-1/(2sqrt(2))-1/sqrt(2),-1/sqrt(3)` be the direction cosines of any directed line? Justify your answer.

(2)/(sqrt(3)),(-2)/(sqrt(3)),(-1)/(sqrt(3)) be the direction ratios of any directed line? Justify your answer.]

Can (1/sqrt3,1/sqrt2,1/sqrt2) be direction cosines of a vector.

If (1)/(sqrt(2)),(1)/(2) , n are the direction consines of a line, then n =

The direction cosines of a vector hati+hatj+ sqrt2hatk are

Can the direction cosines of a line be 1/sqrt2 , 1/sqrt2, 1/sqrt2 ?

For what value 'a' will the number sqrt(1/2),a,sqrt(1/3) be the direction cosines of a line?

Find the direction cosines of the line whose direction ratio are sqrt3,0,-1

The direction cosines of a line whose direction ratios are 1, -2, 3 are

The direction cosines of a vector hati+hatj+sqrt(2) hatk are:-

If 1/2,1/3,n are direction cosines of a line, then the value of n is