Write a function getSim that accepts two arguments, $u$ and $v.u$ and $v$ are NumPy vectors

$($one$-$dimensional arrays$)$ with floating point entries which we would write in our notes

mathematically as $u_{?}$ and $v_{?}.$

getSim returns a floating point number which is equal to

$|hat(u{)}_{-}$hat$(v{)}_{|}$

where

widehat$(u)$

is the unit vector for $u.$