check Wether the vector `((hati)/sqrt (2)+(hati)/sqrt(2))` is a unit vector or not .

check Wether the vector `((hati)/sqrt (2)+(hati)/sqrt(2))` is a unit v

1.	check Wether the vector `((hati)/sqrt (2)+(hati)/sqrt(2))` is a unit vector or not .
Answer» Aunit vector is a vector with magnitude 1. The magnitude of given vector is `\|(hati)/(sqrt(2)) +(hati)/(sqrt(2))\|=sqrt (((1)/(sqrt(2)))^(2)+((1)/(sqrt(2)))^(2))=sqrt ((1)/(2)+(1)/(2))=sqrt(1)=1` As magnitude of given vector is 1. `therefore `It is a unit vector.

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check Wether the vector `((hati)/sqrt (2)+(hati)/sqrt(2))` is a unit vector or not .

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