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
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Let the two vectors be 
and 
Then, magnitude of sum of 
and 
,
and magnitude of difference of 
and 
,
(given)
or 
AB 
4 
or 
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