Question

The unit vector along the direction of
A =4i - 2j - 4k​

Answer 1

Answer:

$\huge\mathfrak\green{✷answer✷}$

$unit \: vector \: a = \frac{a}{ |a| }$

$given \: a = 2i + 3j + k$

$a = \sqrt{ {2}^{2} + {3}^{2} + 1}$

$= \sqrt{14}$

$unit \: vector \: a = \frac{2i + 3j + k}{ \sqrt{14} }$

$\frac{2}{ \sqrt{14} } i + \frac{3}{ \sqrt{14} } j + \frac{1}{ \sqrt{14} } k$

$zero \: vector \: 0 = 0i + 0j + 0k$

Explanation:

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