There are how many formula for area of triangle?
There are a few that can vary on the sides and angles, but ultimately they all mean the same thing.
$\displaystyle \frac{ABsinC}{2}$
A is the base or bottom side, and $\displaystyle BsinC$ is equal to the height, so it ends up being equal to the common formula: $\displaystyle A=0.5bh$