sin(0)	0
arcsin(0)	0
sin(pi/6)(30s)	1/2
arcsin(1/2)	pi/6
sin(pi/4)(45s)	sqrt2/2
arcsin(sqrt2/2)	pi/4
sin(pi/3)(60s)	sqrt3/2
arcsin(sqrt3/2)	pi/3
sin(pi/2)(90s)	1
arcsin(1)	pi/2
cos(0)	1
arccos(1)	0
cos(pi/6)(30s)	sqrt3/2
arccos(sqrt3/2)	(pi/6)(30s)
cos(pi/4)(45s)	sqrt2/2
arccos(sqrt2/2)	pi/4
cos(pi/3)(60st)	1/2
arccos(1/2)	pi/3
cos(pi/2)(90s)	0
arccos(0)	pi/2
tg(0)	0
arctg(0)	0
tg(pi/6)	sqrt3/3
arctg(sqrt3/3)	pi/6
tg(pi/4)	1
arctg(1)	pi/4
tg(pi/3)	sqrt3
arctg(sqrt3)	pi/3
tg(pi/2)	niesk
arctg(niesk)	pi/2
ctg(0)	niesk
arcctg(niesk)	0
ctg(pi/6)	sqrt3
arcctg(sqrt3)	pi/6
ctg(pi/4)	1
arcctg(1)	pi/4
ctg(pi/3)	sqrt3/3
arcctg(sqrt3/3)	pi/3
ctg(pi/2)	0
arcctg(0)	pi/2