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If vec a and vec b are two unit vectors ...

If `vec a` and `vec b` are two unit vectors and `theta` is the angle between them, then the unit vector along the angular bisector of `vec a` and `vec b` will be given by

A

`1.2A^(@)`

B

`10A^(@)`

C

`100A^(@)`

D

`1A^(@)`

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The correct Answer is:
A
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