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Find the component of 2i +3j +k in the direction of 3i-j

Find the component of 2i +3j +k in the direction of 3i-j 
 

Grade:12th pass

1 Answers

Yuvraj Singh
askIITians Faculty 21 Points
18 days ago

Unit vector along 3i +4k
= (3i +4k)/ 5
Now magnitude of vector the component of vector 2i +3j+ k in the direction of 3i +4k
Take dot product
= (2i +3j +k).(3i +4k)/5
= (6 +0 +4)/5
= 10/5
= 2

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