sin 0 = 0 cos 0 = 1 tan 0 = 0
sin cos tan
sin cos tan = 1
sin cos tan
sin = 1 cos = 0 tan = ∞
sin π = 0 cos π = −1 tan π = 0
sin = − 1 cos = 0 tan = ∞
sin 2π = 0 cos 2π = 1 tan 2π = 0
sin 0 = 0 cos 0 = 1 tan 0 = 0
sin cos tan
sin cos tan = 1
sin cos tan
sin = 1 cos = 0 tan = ∞
sin π = 0 cos π = −1 tan π = 0
sin = − 1 cos = 0 tan = ∞
sin 2π = 0 cos 2π = 1 tan 2π = 0