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Find the values of 'x' for which x(hat(i...

Find the values of 'x' for which `x(hat(i)+hat(j)+hat(k))` is a unit vector.

A

`pm (1)/(sqrt3)`

B

`pm sqrt3`

C

`pm 3`

D

`pm (1)/(3)`

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The correct Answer is:
A
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