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what is The angle between the lines whose direction cosine satisfy the equations l + m +n =0 ; l 2  = m 2  +n 2 ?

what is The angle between the lines whose direction cosine satisfy the equations l + m +n =0 ; l2 = m2 +n2  ?  

Grade:12

1 Answers

ng29
1698 Points
7 years ago
60 degree or  30 degree

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