Make an entity point towards another entity (in my case, player)

I'm making a mod with a custom mob that's like a skeleton, but I made it so it shoots arrows with the procedure called every tick shown here: https://imgur.com/dGpRsWu

However, the entity's movement is a little erratic and it often shoots an arrow to the left or right of the player. I want to make it so my entity always points towards the player. I know there's a set rotation block, but I'm not sure how to get the yaw and pitch that would be towards the player.