flow over a NACA0017 air foil

Lift vs Angle of Attack:

As the angle of attack increases, the lift force also increases which is accompained by the formulae Lift = co-eff of lift * (Ar * V^2 * density)/2. As the angle of attack increases co-eff of lift also increases upto critical angle of attack beyond which lift co-eff decreases.

Drag Force Vs Angle of Attack:

Drag force is proportional to frontal area of contact. As the Angle of Attack increases, frontal projected Area also increases which increases the drag force.