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30 1/2 √3/2
45 √2/2 √2/2
60 √3/2 1/2
90 1 0
180 0 - 1
0 0 1
sin 45 = 1/2√2
sin 60 = 1/2√3
sin 90= 1
sin 180 = 0
sin 0 = 0
cos 30= 1/2√3
cos 45 = 1/2√2
cos 60= 1/2
cos90 = 0
cos 180 = -1
cos 0 = 1