In INDUCED DRAG VIDEOthis video at 2:57
Look at video at 2:57 they increase the AoA to compensatemaintain lift,and which normally than larger AoA will increase drag ,(becuasealso increases the drag increase with increasing AoA).Imagine Now, imagine that we dontdon't increase the AoA,drag: the drag will not increase but we will not have enough lift to keepto maintain level flight.. But if If we want to keep the same lift and fly in level flight we must increase the AoA,so only then drag will increase..
So :
1)to increase induced drag, must be and ASSUMPTION -"FOR SAME LIFT", otherwise dragonly then will not increase because we didntthe drag increase AoA....
2)InducedSo induced drag is just caused by a larger AoA,so basicly so basically this is a type of pressure drag..
Do you agree that if we dontdon't increase the AoA(at 2:57 on as described in the video) than then the drag will not increase as well? So do you agree if we comapare drag between 2D and 3D wing we must have ASSUMPTION-"FOR SAME LIFT"?