How to prove that sin(A-B)=sin(A)cos(B)-cos(A)sin(B) geometrically

In this post I’ll be demonstrating how one can prove that sin(A-B)=sin(A)cos(B)-cos(A)sin(B) geometrically… First of all, let me show you this diagram… sin(A-B)=sin(A)cos(B)-cos(A)sin(B) proof *If you click on the diagram, you will be able to see its full size version. IMPORTANT FACTS ABOUT THE DIAGRAM Now, to begin with, I will have to write about … Continue reading How to prove that sin(A-B)=sin(A)cos(B)-cos(A)sin(B) geometrically