Людина
AFI, Hollywood Undead, Slipknot, Asking Alexandria, Bring Me The Horizon, Avenged Sevenfold
„Воно”, „11.22.63”, „Сяйво”, „Доктор Сон”
sina = cos(90o-a) tana = cot(90o-a) sin2a + cos2a = 1 sina/cosa=tana cosa/sina=cota tana*cota = 1 1 + tan2a = 1/cos2a 1 + cot2a = 1/sin2a sin2a = 2sina*cosa cos2a = cos2a-sin2a sin3a = 3sina-4sin3a cos3a = 4cos3a-3cosa