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i=20sin(100πt-rc1π/6)A i=0.4sin(100πt-n/6)A i=0.4sin(100πt-π/3)A i=0.4sin(100πt十π/3)A
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u=100sin(50t+30) u=141.4sin(50t+30) u=200sin(100t+30) u=141.4sin(100t+30)
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100sin(50t+30°) 141.4sin(50πt) 200sin(100πt+30°) 200sin(50πt+30°)
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i=0.4sin(100πt-π/6) i=0.4sin(100πt+5/6π) i=0.4sin(100πt+π/6) i=0.4A
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i=20sin(100 -ππ/6)A i=0.4sin(100 -2πtπ /3)A i=0.4sin(100 π +π /3)A