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The vector vecA and vecB are such that |...

The vector `vecA` and `vecB` are such that `|vecA+vecB|=|vecA-vecB|`. The angle between vectors `vecA` and `vecB` is -

A

`90^(@)`

B

`60^(@)`

C

`75^(@)`

D

`45^(@)`

Text Solution

Verified by Experts

The correct Answer is:
1
`|vecA+ vecB|^(2) = |vecA- vecB|^(2)`
`rArr A^(2) + B^(2) + 2AB cos theta = A^(2) + B^(2) - 2AB cos theta `
`rArr cos theta = 0 rArr theta = 90^(@)`
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