When drawing a free body diagram of banking of road, why don't we resolve weight of car into its cos and sin components? It is seen that only normal reaction force and frictional force are resolved

• The component is resolved with respect to axes .... As you see , $mg$ lies on the axis , si no resolution was required... – Nehal Samee Mar 27 '18 at 5:25
• @NehalSamee Oh yes right. That point escaped my mind. Thank you. – user187749 Mar 27 '18 at 5:27
• @NehalSamee That looks like it should be an answer – David Z Mar 27 '18 at 5:38