The direction Cosines of two lines at right angles are `l_(1),m_(1),n_ – InterviewSolution

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1.	The direction Cosines of two lines at right angles are `l_(1),m_(1),n_(1)and l_(2),m_(2),n_(2)` Then the direction cosines of a line which is perpendicular to both these lines areA. `l_(2)-l_(2),m_(1)-m_(2),n_(1)-n_(2)`B. `l_(1)+l_(2),m_(1)+m_(2),n_(1)+n_(2)`C. `m_(1)n_(2)-m_(2)n_(1),n_(1)l_(2)-n_(2)l_(1),l_(1)m_(2)-l_(2)m_(1)`D. `l_(1)+kl_(2),m_(1)+km_(2),n_(1)+kn_(2)`
Answer» Correct Answer - c

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