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

ADARSH TRIPATHI

Oct. 29, 2017, 10:09 p.m.

Answers!

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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