Find-the-angle-between-the-lines-whose-direction-cosines-are-given-by-l-m-n-0-and-l-2-m-2-n-2-0-

Question Number 75521 by vishalbhardwaj last updated on 12/Dec/19

Find the angle between the lines

whose direction cosines are given

by l + m + n = 0 and l^{2} + m^{2} - n^{2} = 0 ? ?

Commented by mr W last updated on 12/Dec/19

w h a t a r e t h e d i r e c t i o n c o s i n e s o f

l i n e 1 a n d w h a t a r e t h a t o f l i n e 2 ?

t h i s i s n o t c l e a r i n y o u r q u e s t i o n .

Commented by vishalbhardwaj last updated on 12/Dec/19

sir question is correct and it is written

as I have written here