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Prove that the lines whose direction cosines are given by the relations al+bm+cn=0 and lm+mn+ln=0 are perpendicular if (1/a)+(1/b)+(1/c)=0.

Prove that the lines whose direction cosines are given by the relations al+bm+cn=0 and lm+mn+ln=0 are perpendicular if (1/a)+(1/b)+(1/c)=0.

Grade:12th pass

1 Answers

Sourabh Singh IIT Patna
askIITians Faculty 2104 Points
7 years ago
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