If the magnitude of sum of two vectors is equal to the magnitude of difference of the two vectors, the angle between these vectors is ........ $^o$
If the magnitude of sum of two vectors is equal to the magnitude of difference of the two vectors, the angle between these vectors is ........ $^o$
- [NEET 2016]
- A
$90$
- B
$120$
- C
$45$
- D
$60$
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- [IIT 2000]
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