Unit vector parallel to the resultant of vectors $\vec A = 4\hat i - 3\hat j$and $\vec B = 8\hat i + 8\hat j$ will be

  • A

    $\frac{{24\hat i + 5\hat j}}{{13}}$

  • B

    $\frac{{12\hat i + 5\hat j}}{{13}}$

  • C

    $\frac{{6\hat i + 5\hat j}}{{13}}$

  • D

    None of these

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Which of the following relations is true for two unit vectors $\hat{ A }$ and $\hat{ B }$ making an angle $\theta$ to each other$?$

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