1, sin3x = cos2x
2, cosx = -sin2x
3, sin3x + sin5x = 0
4, 2cosx - = 0
5, sinx - cos( x + 60° ) = 0
6, cos( x-10°) + sinx = 0
7, cos3x - sin2x = 0
please! help

сорин8888    3   02.08.2019 17:38    0