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Find the unit vector parallel to the sum...

Find the unit vector parallel to the sum of the vectors `vec(a)=2hat(i)+4hat(j)-5hat(k)` and `vec(b)=hat(i)+2hat(j)+3hat(k)`. Also, find its direction cosines.

Text Solution

Verified by Experts

The correct Answer is:
`3/7hat(i)+6/7hat(j)-2/7hat(k),3/7,6/7,(-2)/(7)`
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