у=1,7х,
-2×1,7=-3.4
0×1.7=0
3,8×1.7=6.46
-6,4×1.7=-10.88
t=+-arcsin3/4 +2pn
7/15 = 0.46666
1/33 = 0.03030
-5/9 = -0.55555
1/30 = 0.03333
-5/18 = -0.27777
1/45 = 0.02222