v = sqrt [2gL(1−cosθ)]

Which makes sense until you think of the fact that θ ought to be ZERO when the pendulum is at it's lowest point. This does not agree with the formula, however, because cos(0)=1, therefore 1-cos(0) = 0, therefore the velocity is ZERO at the bottom of the swing...but everyone knows that velocity is actually at a MAXIMUM at the bottom of the swing....

Maybe they meant that θ is the angle made by the pendulum with respect tot he HORIZONTAL...That way it would be cos(90) at the bottom, therefore velocity would be at a maximum...

Is there something simple I am overlooking here?