Question

( left(1-2 sin ^{2} alpha cos ^{2} alpharight)-2left(1-2 sin ^{2} cos ^{2} alpha-cos ^{2} alpha sin ^{2} alpharight) )
( left(1-2 sin ^{2} alpha cos ^{2} alpharight)-2left(1-3 sin ^{2} alpha cos ^{2} alpharight) )
( =3-6 sin ^{2} alpha cos ^{2} alpha-2+sin ^{2} alpha cos ^{2} alpha )

# The expression 3 sin* (% - a) + sin"(3- c)] -2 sin* (E+al) + sin6 – c) is equal to

Solution