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Two vectors vecA and vecB are such that ...

Two vectors `vecA` and `vecB` are such that `vecA+vecB=vecA-vecB`. Then

A

`vecA*vecB`

B

`vecA xx vecB = vec0`

C

`vecA= vec0`

D

`vecB= vec0`

Text Solution

Verified by Experts

The correct Answer is:
3
`(sqrt(F^(2) + F^(2) + 2F^(2)costheta ))^(2)= 3(F) (F)`
`2F^(2) + 2F^(2) costheta = 3F^(2)`
`costheta = (1)/(2) rArr theta = 60^(@)`
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