Angle Between Two vectors in terms of direction cosine and direction ratio

Direction cosine and ratio of 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 of of a vector

Find the angle between the vectors whose direction cosines are proportional to 2,3,-6 and 3,-4,5.

Find the angle between the vectors whose direction cosines are proportional to 2,3,-6 and 3,-4,5

Expalin direction cosine of a vector ?

If a line has direction cosines , then find the direction ratios.

Find the direction cosines of the vectors: hatk

Direction Cosines And Direction Ratios Of A Line