Тригонометрия мини самостоятельная sin x =
cos x =
ctg x =
sin 2x = 1
cos = -1
(2 sin x - 1) (2cos4x + ) = 0
cos 2 x - 6 cos x + 5 = 0
2 sin(3x - ) =
3 cos 2 x = 7 (sin x+1)
sin 2x – 2 cos x = 0
cos x +cos 3x = 0

Olenadob    2   20.10.2020 01:41    0