

InterviewSolution
Saved Bookmarks
1. |
Find the unit vector of `4hati-3hatj+hatk.` |
Answer» We know that , for unit vector `A=A_(x)hati+A_(y)hatj+A_(z)hatk` `=4hati-3hatj+hatk` `therefore A_(x)=4,A_(y)=-3,A_(z)=1` `|A|=sqrt(A_(x)^(2)+A_(y)^(2)+A_(x)^(2))=sqrt((4)^(2)+(-3)^(2)+(1)^(2))=sqrt(26)` `therefore "Unit vector", hatA=(A)/(|A|)=(hat4-3hatj+hatk)/sqrt(26)` |
|