Question

Answer this quick please ​

Answer 1

Answer:

Magnitude of the vector :----

$|A| = \sqrt{ {1}^{2} + {( - 2)}^{2} + {1}^{2} } \\ = \sqrt{1 + 4 + 1} = \boxed{\sqrt{6} \: units}$

Unit Vector :----

$\huge{\frac{1}{ \sqrt{6} } i - \frac{2}{ \sqrt{6}}j + \frac{1}{ \sqrt{6} } k}$

Answer 2

Answer:

1/√6 i - 2/√6 j+ 1√6 k