the value of i+ 2j - 3 k is parallel to 3i+ mj - 9k is
Answer (1)
Student Expert
18th Oct, 2019
Hello there!
Greetings!
It's quite easy, since both the vectors are parallel then for cetain value of a , we have,
i + 2j -3k= a (3i + mj -9k)...........(1)
Or, -3k = -9a k ( on equating k component of both the sides of the equation 1. )
or a =3 .....(2)
Also , 2j = ma j ( on equating j component of both the sides of equation 1.)
or 2j = m × 3×j (on putting the value a from 2) ,
or m = 2/3 .
Thus , m = 2/3.
Thankyou
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Comments (2)
I am not understood please give me steps
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Niranjan Vinod Mali
I just mentioned the steps right now, you can check now , you will understand it.
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