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the angle between the vectors (hati+hatj...

the angle between the vectors `(hati+hatj)` and `(hatj+hatk)` is

A

`30^@`

B

`45^@`

C

`60^@`

D

`90^@`

Text Solution

Verified by Experts

The correct Answer is:
C
`(hati+hatj).(hatj+hatk)=0+0+1+0=1`
`costheta=(vecA.vecB)/(|vecA||vecB|)=(1)/(sqrt(2)xxsqrt(2))=(1)/(2)becausetheta=60^@`
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