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The dir cosines of two lines are related by l+m+n=0 & a(l)2+b(m2+c(n)2=0 the lines

The dir cosines of two lines are related by l+m+n=0 & a(l)2+b(m2+c(n)2=0 the lines

Grade:11

1 Answers

Sourabh Singh IIT Patna
askIITians Faculty 2104 Points
6 years ago
Represent one in the form of other two. Then make a quadratic and frame a relationship between the other two in order to get the answer

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