Перетворення добутку тригонометричних функцій у суму

1/2(sin(x-y)+sin(x+y))

1/2(cos(x-y) + cos(x+y))

1/2(cos(x-y) - cos(x+y))

1/2(sin(x-y) - sin(x+y))

 1/2(sin(x-y)+sin(x+y))

 1/2(cos(x-y)+cos(x+y))

 1/2(cos(x-y)-cos(x+y))

 1/2(sin(x-y)-sin(x+y))

 1/2(sin(x-y)+sin(x+y))

 1/2(cos(x-y)+cos(x+y))

 1/2(cos(x-y)-cos(x+y))

 1/2(sin(x-y)-sin(x+y))

2cos22α cos5α

2sin22α sin5α

2cos22α sin5α

2sin22α cos5α

2 sin π/24 cosπ/4

sin π/12 cosπ/8

2 sin π/8 cosπ/24

2 sin π/24 cosπ/8