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

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 =

Under what condition do (1/sqrt2,1/2,K) represent direction cosines of a line ?

If a line has the direction ratios sqrt(2),-sqrt(5),sqrt(2) , then its direction cosines are

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

If the direction ratio of a line is 1,-2,2 Then what are the direction cosines of the line

The Cartesian equations of a line AB are (2x-1)/(sqrt(3))=(y+2)/2=(z-3)/3dot Find the direction cosines of a line parallel to AB.

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

[" A point on a line has coordinates "],[(p+1,p-3,sqrt(2)p)" where "p" is any "],[" real number.What are the direction "],[" cosines of the line? "],[" (a) "(1)/(2),(1)/(2),(1)/(sqrt(2))],[" (6) Cannot be determined due to "],[" insufficient data "]