Your AI-Powered Personal Tutor
Question

Let $\widehat a$, $\widehat b$ be unit vectors. If $\overrightarrow c $ be a vector such that the angle between $\widehat a$ and $\overrightarrow c $ is ${\pi \over {12}}$, and $\widehat b = \overrightarrow c + 2\left( {\overrightarrow c \times \widehat a} \right)$, then ${\left| {6\overrightarrow c } \right|^2}$ is equal to :

$6\left( {3 - \sqrt 3 } \right)$
$3 + \sqrt 3 $
$6\left( {3 + \sqrt 3 } \right)$
$6\left( {\sqrt 3 + 1} \right)$

Solution

Please login to view the detailed solution steps...

Go to DASH