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If \( \hat{\mathrm{n}} \) is a unit vector in the direction of the vector
\( \overrightarrow{\mathrm{A}} \), then :-
(1) \( \hat{n}=\frac{\vec{A}}{|\overrightarrow{\mathrm{A}}|} \)
(2) \( \hat{\mathrm{n}}=\overrightarrow{\mathrm{A}}|\overrightarrow{\mathrm{A}}| \)
(3) \( \hat{n}=\frac{|\overrightarrow{\mathrm{A}}|}{\overrightarrow{\mathrm{A}}} \)
(4) None of the above
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