When the basketball leaves a shooter’s hands they usually know when it’s going in. It feels soft off the fingertips, the rotation is spinning, the shot feels true.  But lately for the Lakers, those shots have not been falling .  In their first-round series against the Rockets, there’s one statistic that screams out amongst all the others: three-point shooting.  The key to the Lakers winning the series is simple: make more threes. The team that’s shot better from deep in every game has won. NBAE via Getty Images The math is simple: whichever team shoots better from three, they win the game.  For the Lakers, they started this series scorching hot from the perimeter.  Game 1: Lakers at 52.6% from deep — win. Game 2: Lakers at 46.4% — win. Game 3: Lakers at 41.4% — win. Through the first three games, the Lakers efficiency from beyond the arc changed the geometry of the game. Luke Kennard was great in the first three games of the series but struggled in the last two.…