UPSC NDA Math Model Paper 5

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Question : 7 of 120
 
Marks: +1, -0
If |
→
a
+
→
b
|
=
|
→
a
−
→
b
|,
then which of the following is/are correct?
1. Vectors a and b are orthogonal
2.
→
a
×
→
b
=0(
→
a
=
→
b
≠0
)

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