10, 20, 30, 12, 13, 21, 31, 23, 32, 120, 130, 210, 310, 320, 230, 123, 231, 321, 213, 312, 203, 201, 102, 103, 301, 302.
1.cos(x)=-1
x=+-arccos+2ПN
2.tg(x)=-1
x=arctg+ПN
3.2sin(x)=sqrt3
x=(-1)arcsin(sqrt3/2)+ПN