If as line has direction ratios 2, -1, -2, determine its direction cosines.

If a line has direction ratios 2,1,2 determine its direction cosines.

(A) If a line makes angle 90^(@), 135^(@), 45^(@) with the x , y and z respectively, find its direction-cosines. (b) If a line has direction-ratio lt 2, -1, -2, gt , determine its direction-cosines.

If a line has direction ratios 2,-1,-2 then what are its direction cosines ?

If a line has the direction ratios -1, 2, 3, then its direction cosines are

If a line has the direction ratios 4, -12, 18, then its direction cosines are

If a line has direction ratios 2,1,2, then what are its direction cosines?

If a line has direction ratios -18,-12,-4 then what are its direction cosines?

If a line has the direction ratios -18,12,-4 then what are its direction cosines?

If the length of a vector be 7 and direction ratios be 2, -3, 6, then its direction cosines are