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cos(120°) ? =-½ =-√3/2 cos(π/4) ? =√3/2 =1/√2 sin(45°) ? =½ =1/√2 sin(2π/3) ? =√3/2 =1/√2 sin(5π/4) ? sin(30°) ? =1/√2 =½ =-1/√2 =-½ cos(215°) ? =-½ =-1/√2 cos(π/6) ? =3/√2 =√3/2 sin(240°) ? sin(5π/6) ? =1/√3 =-√3/2 = ½ =-2/√3 =-√3/√2 =-√3/2 cos(150°) ? cos(4π/3) ? =-¼ =-½ sin(330°) ? sin(7π/4) ? =1/√2 =-1/√2 =-1/√2 =-½ =-1/√2 =1/√2 cos(315°) ? cos(11π/6) ? =√3/2 =3/√2 sin(5π/3) ? sin(210°) ? =√3/2 =-√3/2 =-½ =½ cos(7π/6) ? =-√3/2 =√3/2 cos(300°) ? =-½ =½ sin(3π/2) ? sin(90°) ? =-1 =0 =1 =1 cos(270°) ? cos(π/2) ? =-1 =0 =1 =0 sin(π) ? =0 =-1 sin(360°) ? =0 =1 cos(180°) ? =0 =-1 cos(2π) ? =0 =1 |