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Under what condition |a+b|=|a|+|b| holds good (a) act in the same direction (b) act in the opposite direction (c) are different physical quantities (d) have same magnitude

Under what condition |a+b|=|a|+|b| holds good
(a) act in the same direction
(b) act in the opposite direction
(c) are different physical quantities
(d) have same magnitude

Grade:11

1 Answers

Arun
25758 Points
4 years ago
Dear students
 
|a+b|=|a|+|b|  is valid only and only if a and b act in same direction
 
You can prove it by dot product of self.

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