Is i + j a unit vector? Explain.

Asked by  | 17th Jun, 2013, 03:04: PM

Expert Answer:

No, unit vector is the one which has magnitude =1 
 
Here let a = i + j 
|a| = sqrt(1^2 + 1^2)
|a| = sqrt(2) which is not equal to 1. 
hence i + j is not a unit vector. 

Answered by  | 17th Jun, 2013, 04:49: PM

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