Find maximum angle of box in slot

Angle Brackets

The opening angle of the slot is the angle of the arc formed by the first and last points of the slot along the lamination bore radius, with O=(

batman 138 slot Angle 40x40 ZN groove 8 I type

slot demo cq9 There is a slot on the outside of the cylinder that is wide The slot wraps around the outer diameter of the cylinder at a 45 degree