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The vectors vecA and vecB are such that ...

The vectors `vecA and vecB` are such that `|vecA+vecB|=|vecA-vecB|` .
The angle between two vectors will be

A

`0^@`

B

`60^@`

C

`90^@`

D

`45^@`

Text Solution

Verified by Experts

The correct Answer is:
C
Here, `|vecA+vecB|=|vecA-vecB|`
or, `A^2+B^2+2ABcos theta =A^2+B^2-2AB cos theta[ theta` is the angle between `vecA and vecB`]
or, `4A cos theta =0 or, cos theta =0 or, theta =90^@`
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