if two vectors a and b act on a straight line then |a+b|=||a|-|b||.Explain

Asked by  | 17th Feb, 2012, 10:24: AM

Expert Answer:

a+b=|a|-|b|
 
If |b|>|a|,
then a+b will be negative.then we can say,
|a+b|=||a|-|b||

Answered by  | 17th Feb, 2012, 10:31: AM

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