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If |vec alpha + vec beta |=| vec alpha -...

If `|vec alpha + vec beta |=| vec alpha - vec beta|,` then :

A

`vecalpha ` is parallel to `vecbeta`

B

`vec alpha bot vec beta`

C

`|vecalpha | = |vec beta|`

D

None of these.

Text Solution

Verified by Experts

The correct Answer is:
B
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