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The angle between the two vectors A=3 ha...

The angle between the two vectors `A=3 hati+4hatj+5hatk` and `B=3hati+hatj-5hatk` is

A

`60^@`

B

`45^@`

C

`90^@`

D

`30^@`

Text Solution

Verified by Experts

The correct Answer is:
C
A.B = 9 +16 -25 = 0
`:.` Angle between A and B is `90^(@).`
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