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If the angle between the planes barr.(xh...

If the angle between the planes `barr.(xhati+hatj-hatk)=4` and
`barr.(hati+xhatj+hatk)= -1` is `(pi)/(3)`, then the value of `x` is

A

(a) `2`

B

(b) `0`

C

(c) `-2`

D

(d) `4`

Text Solution

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The correct Answer is:
A
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