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)`


Discussion

No Comment Found

Related InterviewSolutions