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Grade 11Vectors

The Direction Ratios of two parallel lines are 3,2,9 and 1,p,3. Find p. Can you please tell how to do.

Profile image of Arjun
8 Years agoGrade 11
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1 Answer

Profile image of Arun
8 Years ago
Dear Arjun
 
Direction ratio of parallel lines can be a multiple of one another.
Hence
In the given direction ratios, they can be multiple of one another.
When we see,
1st direction ratio is multiple of 3 of 2nd direction ratio.
Hence
2 = 3p
p = 2/3
 
Regards
Arun (askIITians forum expert)

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