Prove that 〖sin〗^(6 ) A+ 〖Cos 〗^6 A= 1- 3 〖sin〗^2 A .〖cos〗^2 A

Prove that 〖sin〗^(6 ) A+ 〖Cos 〗^6 A= 1- 3 〖sin〗^2 A .〖cos〗^2 A, 10th Trignometry challenging questions, 10th Cbse Trignometry, 10th Trignometry Maharashtra Govt. Que bank for SSc 2021