If the direction cosines of a variable line in two adjacent points be `l, M, n and l+deltal,m+deltam+n+deltan` the small angle `deltatheta`as between the two positions is given by

If the direction cosines of a variable line in two adjacent points be l,M,n and l+delta l,m+delta m+n+delta n the small angle delta theta as between the two positions is given by

If l , m, n are the direction consines of a line, then

If a variable line in two adjacent position has direction cosines l,m,n and l+delta l, m+delta m, n+delta n and delta theta is the angel between two positions, then (delta l)^(2)+(delta m)^(2)+(delta n)^(2)=

If l,m,n are direction cosines of a line , then vector li +mj+nk is a

If l,m,n are direction cosines of the line then -l,-m,-n can be

If l,m,n are the direction cosines of a half line op then the maximum value of l.m.n is

If (l,m,n) are direction cosines of a line then L^(2)+m^(2)+n^(2)

The direction cosines of the lines bisecting the angle between the line whose direction cosines are l_1, m_1, n_1 and l_2, m_2, n_2 and the angle between these lines is theta , are

If (l,m,n) are the direction cosines of a line then l^(2)+m^(2)+n^(2)=