code: def rot_rads_v2(vec_a, rads):
      
  
      x = vec_a.x * math.cos(rads) - vec_a.y * math.sin(rads)
      y = vec_a.x * math.sin(rads) + vec_a.y * math.cos(rads)
      return Vec2(x, y)
docs: Rotate vector by angle in radians.