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The angle between the two vectors vecA=h...

The angle between the two vectors `vecA=hati+2hatj-hatk` and `vecBi=-hati+hatj-2hatk` is

A

`90^(@)`

B

`30^(@)`

C

`45^(@)`

D

`60^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D
`cos theta=(vecA.vecB)/(|vecA||vecB|)`
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