If a is unit vector and x - a - x - a -8- then - x -A- 1B- 2C- 3D- 4

The correct option is C 3 |x|^2 |a|^2=8 ⇒ |x|=3 ...

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Cross Product of Two Vectors

If a is unit ...

Question

If $\to a$ is unit vector and $(\to x - \to a) . (\to x + \to a) = 8, t h e n | \to x | =$

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