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0°=0
45°=
90°= 1
135°=
180°=0
225°=
270°= (-1)
315°=
cosα
0°=1
45°=
90°=0
135°=
180°=(-1)
225°=
270°= 0
315°=
tgα
0°=0
45°=1
135°= (-1)
180°=0
225°= 1
315°= (-1)
ctgα
45°=1
90°=0
135°= (-1)
225°= 1
270°= 0
315°= (-1)