已知两个正弦量分别为i1=-4cos(100t+60°)A,i2=4cos(100t+30°)A,则i1和i2的相位差为()。A、i1超前i230°B、i1滞后i230°C、i1超前i2150°D、i1滞后i2150°

已知两个正弦量分别为i1=-4cos(100t+60°)A,i2=4cos(100t+30°)A,则i1和i2的相位差为()。

  • A、i1超前i230°
  • B、i1滞后i230°
  • C、i1超前i2150°
  • D、i1滞后i2150°

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