Show that the three lines with direction cosines12 -3 -4 4 12 3 3 4 12 – InterviewSolution

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1.	Show that the three lines with direction cosines12 -3 -4 4 12 3 3 4 1213 13 13' 13 13 13 13 13 13 are mutually perpendicular.1.is nerrnendicular to t
Answer» l m + pq +rs =0 we u do this u can get the answer

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