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

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

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

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

Check whether (2sqrt(3)+sqrt(5))*(2sqrt(3)-sqrt(5)) is rational or irrotational? Justify your answer

(2+sqrt(3))/(2-sqrt(3))+(2-sqrt(3))/(2+sqrt(3))+(sqrt(3)+1)/(sqrt(3)-1)is

If A equiv (2, 3, 4), B equiv (3, 4, 5). The direction cosine of a line are (1/sqrt(3), 1/sqrt(3), 1/sqrt(3)) Now integral value of the projection of AB on the given line is _______.

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

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