Direction Cosines And Direction Ratios Of A Line

If l,m,n are direction cosines of the line then -l,-m,-n can be: a) only direction ratios of the line b) only direction cosines of the line c) direction cosines and direction ratios of the line d) neither direction cosines nor direction ratios of the line

Direction Cosines| Direction Ratio| Lines| planes| family of Planes| Intersection of planes

Direction Cosines, Direction Ratio, Lines, planes, family of Planes, Intersection of planes

Direction cosine and ratio of line

Find the direction ratios and direction cosines of a line joining the points (3,-4,6) and (5,2,5) .

Find the direction ratios and direction cosines of the lines joining the following points.(1,2,3) and (4,5,6)

Find the direction ratios and direction cosines of the lines joining the following points. (5,3,-2) and (3,-1,4)