Analytical Geometry
angle betweem the lines 2x=3y=4z and 7x=5y=-z
2 Answers
SAGAR SINGH - IIT DELHI
Dear student,
Use the following ![[Graphics:Images/index_gr_5.gif]](http://members.tripod.com/vector_applications/angle_between_two_lines/Images/index_gr_5.gif){kind=small}
. ![[Graphics:Images/index_gr_6.gif]](http://members.tripod.com/vector_applications/angle_between_two_lines/Images/index_gr_6.gif){kind=small}
= | ![[Graphics:Images/index_gr_7.gif]](http://members.tripod.com/vector_applications/angle_between_two_lines/Images/index_gr_7.gif){kind=small}
| × | ![[Graphics:Images/index_gr_8.gif]](http://members.tripod.com/vector_applications/angle_between_two_lines/Images/index_gr_8.gif){kind=small}
|cosθ
Mir Noaman Ali IIT-Roorkee
cos theta = L1L2+M1M2+N1N1 DIVIDED BY WHOLE ROOT OVER[ (LI^2+M1^2+N1^2)(L2^2+M2^2+N2^2) ]...WHERE L1,M1,N1 AND L2,M2,N2 ARE THE DIRECTION COSINES OF THE 2 GIVEN LINES ...PLEASE APPROVE MY ANSWER
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