Class 12

If l1, m1, n1 and l2, m2, n2 are direction cosines of two mutually perpendicular lines, show that the direction cosines of the line perpendicular to both these lines are m1n2 - m2n1, n1l2 - n2l1, l1m2 - l2m1

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ADARSH TRIPATHI's image
ADARSH TRIPATHI
Oct. 29, 2017, 10:09 p.m.

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Davneet Singh's image
Davneet Singh
Oct. 30, 2017, 9:40 p.m.

Hi Adarsh

Please check https://www.teachoo.com/3535/755/Misc-2---Chapter-11-3D-Geometry-Class-12-CBSE-NCERT/category/Miscellaneous/

 

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